Author Archives: Mara & Kai

Island Invaders (Invasive Thistle Removal)

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Invasive Species: Canada Thistle Removal 

We removed 6 large garbage bags full of invasive “Canada” thistles over the past few days. Considered a “noxious weed” under the BC Weed control act, these perennial (grow back every year) weeds can reproduce through seed and root regeneration. Thought to have been introduced to North America via contaminated crop seed in the 1700’s, this plant is actually native to southeast Europe and Asia. Presumably they were introduced to Race Rocks by a visitor on clothing or equipment, or perhaps by an animal.

They can be a bit laborious to remove, due to their tap root and ability to regenerate through “cloning” (growing back if you leave the root in the ground). Incredibly, the seeds can remain viable for 3-6 years when buried at typical depth, and some up to 21 years (yikes!). Each plant produces an average of 1500 seeds, but can sometimes exceed 5000.

Because of this, we collected them into garbage bags to remove from the island instead of composting them where they would have the opportunity to reproduce. Unfortunately it appeared that these aggressively persistent weeds were whipper snipped in past seasons, allowing the seeds to disperse and roots to regenerate. Hopefully with some attentiveness, they can be eradicated from Race Rocks in the next few years. More information on other introduced plants available in this post from Garry Fletcher, 2006.

Weather: 

  • Sky partly cloudy, some sunshine
  • Visibility 15+ miles (some fog last night)
  • Wind 20-30 knots W
  • Water choppy, whitecaps

Visitors: 

  • Today Laura (Pearson’s marine science teacher), and her class came for a bit for their first trip to Race Rocks! Two more classes will visit in the next couple of days.
  • Less frequent eco-tourism traffic now that the summer tourism has slowed down. They have been getting quite close to the sea lions though, often causing them to climb over each other to get further away from the vessels. Since it has been overcast, we’ve been seeing the use of flash photography much more, which seems to audibly cause quite a stir.

Ecological: 

  • There have been some birds passing through that we don’t often see: western sandpiper, savannah sparrow, song sparrow, and juvenile sandpiper (or possibly sanderling- we have a hard time with bird ID!) Also, we think we spotted a yellow warbler a while back, but it was too speedy for us to snap a photo.
  • The sea lions have continued to haul out- notably, there are typically over 100 animals on the jetty alone.

Sea Lion Rescued from Plastic Entanglement

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A team comprised of the DFO and Vancouver Aquariums Marine Mammal Rescue (MMR) came out to Race Rocks on September 16th to help the entangled sea lions we’ve spotted over the last few weeks. Leaving from Pedder Bay at 0900, they arrived in two RHIBs at the reserve shortly after. After observing the struggling animals over the last while and communicating information with MMR, they were a welcomed sight.

Right away we spotted three possibly entangled sea lions from the lighthouse (unfortunately none of these three being the animals we photographed previously). We then landed the team of vet techs and veterinarian Marty at the jetty to assess the situation. It was decided that one of the sea lions resting by the water between the guest house and the helicopter pad was our best rescue candidate.

Marty and a videographer from Vancouver Aquarium approached over the helicopter pad from the direction of ‘Camera 5’. They got into position and a shot was taken, but the tranquilizer dart bounced and the sea lion fled into the water.

From the lighthouse we were able to follow its movements and keep the team apprised by radio. There was uncertainty about whether or not it received a partial dose of the tranquilizer as it floated in strange positions/patterns. Moving around Race Rocks to the water beside the solar panel/generator building, it hauled out again and another shot at it was lined up from one of the boats. The angle wasn’t quite right, and it again fled into the ocean and couldn’t be spotted. It was around 1400, and everyone took a break to have some food.

After this, everyone considered calling it off as it was getting late and we couldn’t locate the animal. At the last moment, with both boats ready to head back to Pedder Bay, it was spotted from the lighthouse (resting on the rock mound on the NW point of Great Race Rock)! Tranquilizing was attempted from water, but the dart bounced again and landed in the water and was recovered. Here’s a short video of that:


After that, it ended up too far from the water to try another shot by boat, so in a final effort the one boat landed Marty and the team again while the other stayed on the water to support. With no cover available between him and the animal, Marty had no choice but to crawl about one hundred feet in order to take the shot.

We were able to capture the following footage of the sea lion being darted, going into the water, and then after a tense 20 minutes during which a pod of transient orcas appeared in the reserve (who sometimes eat sea lions), it was found! The team proceeded to cradle the animal between their vessels and remove the plastic band. Then, they injected a reversal drug to reverse the tranquilizer before letting it go.

Everyone was relieved to have successfully helped an animal in need. We have suggested that future disentanglement efforts might have a better chance if extended to overnight stays in the guest house, and perhaps coordinated and executed in a more timely manner in relation to the animal sighting(s). This time we were unable to find the original animals that we had previously spotted, since it took quite a while to organize the rescue attempt. A big thank you to everyone who came to help this sea lion and teach us about their work!

Check out rescue.ocean.org to learn more about the Vancouver Aquarium Marine Mammal Rescue program, and Ocean Wise.

Thanks to the rescue team, one more sea lion has a better chance of survival! (vet Marty holding the dart gun and dart used to tranquilize the sea lion)

 

See media coverage: https://www.bclocalnews.com/news/plastic-band-removed-from-neck-of-greater-victoria-sea-lion-2/

Suspicious Seagull Suppers, A Busy Few Days

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Weather: 

  • Sky partially overcast, some light showers throughout the week
  • Visibility 15 miles this morning, consistent throughout the day, some heavy fog a few days ago
  • Wind 10-15 knots W
  • Water ranging from calm to choppy with waves up to 1.5m over the last few days

Boats/Visitors: 

  • There’s been a lot going on over the past few days! Our apologies for the lapse in updates.
  • On Monday, after a few weeks of planning, the Marine Mammal Rescue team from the Vancouver Aquarium came out to RR with support from DFO, to attempt disentanglement of the troubled sea lions we’ve been spotting. Stay tuned for an in-depth post detailing the days events with many photos and videos! 
  • We have been having minor trouble with the water supply/storage for our house here, but with a little investigation and some extra water deliveries it seems to be changing for the better!
  • With water deliveries, there have been a handful of guests, notably including a guest speaker visiting the college to address students. It’s always nice to see some friendly faces!

Ecological: 

  • The sea lions continue to haul out in larger numbers, but it seems to be tapering off. Our electric fence lines are holding better as they learn (through trial and error) not to push through them.
  • Young seagulls are naive to the danger sea lions pose – we have observed juvenile birds being trampled to death by a sea lion simply moving quickly to a different area of the rock. The birds who learn quickly live to fish another day…
  • Over our time on Race Rocks we have been finding plastic/general garbage across the island compressed into a similar size and shape. After observing a seagull regurgitate a condiment packet (ex: rectangular, fast food style ketchup package), we believe this plastic to be consumed by seagulls on land or at sea, and then carried back to Race Rocks when the birds come to feed their young or rest. Regurgitating the foreign waste, perhaps to feed their offspring or out of discomfort, they deposit this human trash here.
  • Here are some picture showing the plastic/garbage described above:
  • On the note of seagull diet, here are some picture of sea life remains found around RR which would seem to be left overs (and examples of what they should be eating) –  talk about sea food from the source!

Hustle and Bustle / Pleasure Craft Violation / Census

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Weather: 

  • Sky overcast, hazy, steady rain this afternoon
  • Visibility 15 miles this morning, < 2 miles this afternoon
  • Wind 0-10 knots NE
  • Water calm

Boats/Visitors: 

    • A whole boat load of visitors this morning! VP of Pearson College Tyrone, Alum in residence Norbert and friends to advise on our solar panel system, a desalinator consultant (in preparation for the new desalinator!), and an insurance appraiser.
    • Fewer whale watching boats this week, but we have been concerned about the frequent use of flash photography and its possible effects on the wildlife.
    • Greg also made another trip to bring us some water this afternoon.
    • Yesterday we watched a pleasure craft approach the sea lions near our jetty and throw some kind of food at them (some of it hit the sea lions). We were able to capture them scaring the animals, who stampeded into the water. They hovered to take photos and unfortunately pose with their open alcohol. Even more unfortunate, the bait that we saw being thrown at the sea lions previously and perhaps this time as well is not suitable for consumption, as many times it has been treated with formaldehyde.

Ecological: 

  • Many sea lions now, and unfortunately a few that are injured. Aside from the two that we have mentioned previously, we have been finding more fishing hooks scattered around and a sea lion appearing to have a nasty wound possibly caused by an embedded fishing hook.
  • This afternoon we also noticed a sea lion with a propeller inflicted gash on his head. He seemed to be dazed or perhaps concussed due to the injury. Normally the sea lions are skittish and make a ruckus if we get too close, but this one didn’t react to our presence and seemed notably lethargic. We were concerned that he might fall victim to the injury, but approximately an hour later he seemed more alert, reacted to our presence, and seemed to be doing okay.
  • We reported the tagged sea lion to the researchers in California and were excited to hear that they have some information about him and his early life. We hope to be able to share more soon! This little guy has already swum almost 1500 km from his birth place, Ana Nuevo CA.
  • Yesterday there was quite a bit of smoke caused by controlled burning taking place on the nearby DND land. They burned 20 hectares of Gary Oak habitat to protect the species (from invading conifers) and and prevent spread of invasive plants.

Census:

  • 350 sea lions
  • 50 harbour seals
  • 1 elephant seal
  • 40 cormorants
  • 60 adult gulls, and some chicks (they are too hard to see from the lighthouse)
  • 4 geese
  • 20 turnstones

 

Plastic Pollution Strikes Again, Injured Sea Lion

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Today we saw another entangled sea lion hauled out near the jetty. It appears to be wrapped in fishing line, which has embedded itself in the sea lions flesh over time causing infection/rotting.

Seeing these injured animals is a reminder that improperly disposing of garbage, fishing (cut/broken lines, lost nets, etc.), and other ecologically detrimental human activities causes the suffering and death of large (and small) marine life.

Even after an entangled animal dies the damage continues. Modern fishing line made of nylon or polyvinylidene fluoride can take hundreds of years to decompose and after that, it continues to have detrimental effects. The majority of plastics used by humans decompose into ‘microplastics’ composed of/leeching out toxic chemicals such as BPA (bisphenol A) which can then magnify up the food chain accumulating in the organs of larger and larger animals, humans included.

BPA and other compounds such as plasticizer (plastic softener) Diethylhexyl phthalate effects humans as well as other animals, long after we pollute our environment. As the polymer chains break down, humans can be easily exposed by eating seafood, drinking contaminated water, and many more avenues of exposure. This may lead to cancer, birth defects, childhood developmental issues and more. 

We’ve notified Marine Mammal Rescue, hopefully they will be able to help this sea lion and the other entangled one.

Solo Sailer Reaches Home (A busy day)

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Weather: 

  • Sky overcast
  • Visibility 15+ miles
  • Wind 5-15 knots SW
  • Water calm

Boats/Visitors: 

    • This morning we had a group come for a tour of the island
    • Greg also made a trip out to bring us water- thanks Greg!
    • Today Jeanne Socrates sailed past us on her way home from sailing around the world (More Info Here). She is the oldest woman to sail solo unassisted non-stop around the world and the only woman to do so from North America. Way to go! Here is her blog: https://www.svnereida.com/
    • We watched a rental boat from a nearby marina come very close to the sea lions and try to feed them human food from their boat this afternoon. We tried to get their attention to ask them not to but they ignored us.

Ecological: 

  • The sea lion with two neck wraps hauled out near the jetty again today. We’re hoping that a team from the Marine Mammal Rescue Centre (Link Here) will be able to come tranquilize it and remove the plastic soon.
  • A new young elephant seal is visiting today, and it’s tagged! It appears as if it was tagged in California. We think that it might be part of this research: The Costa Lab

Maintenance:

  • The sea lions continue to wage war upon our poor electric fence. Luckily they have stopped knocking over the fence near the generator shed, but they broke right through the fence near the jetty last night! Repairing and keeping the fences standing is a daily task.
  • Greg brought some new fire hose to replace a section of ours that had a leak (we use them to pump water from the boat to our tank). Greg tells us that the new desalinator will be shipped as soon as it is done being tested by the manufacturer.

Coast Guard Visit, The Entangled Sea Lion Is Still Here

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Weather: 

  • Sky partly cloudy, intermittent fog
  • Visibility varying between 0-15 miles
  • Wind 20-30 knots W
  • Water rough, waves to half a metre with some whitecaps

Boats/Visitors: 

  • No visitors today
  • The whale watching boats continue to decrease in volume, this month looks to be a turning point in their season.

Ecological: 

  • We spotted the sea lion with plastic around its neck on the jetty last night, and today it was hauled out onto land between the helicopter pad and the guest house. We contacted DFO, and the entanglement response team will assess if it’s a job that they can do.
  • This afternoon we saw a blue heron, which we haven’t seen before out here.

Maintenance:

  • The Coast Guard visited briefly a few days ago. They stayed on RR for about an hour and did some maintenance on the fog horn system. Two people came on to land, and a third stayed in the Coast Guard zodiac.

More Sea Lion Injuries Due to Fishing

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Weather: 

  • Sky partly cloudy, some periods of fog
  • Visibility 1-15 miles intermittently
  • Wind 20-30 knots W – NW
  • Water rough, whitecaps, swells around 1m

Boats/Visitors: 

  • No visitors today, but on Sunday Corey drove us back to Race Rocks with some more water as we were having troubles getting our boat to start.
  • There have not been many whale watching boats but when they are here they often get quite close to the sea lions (within 10m). We can tell when there is a boat present in the reserve by the increase in “barking” and distressed sounds that the sea lions make.

Ecological: 

  • Over the weekend a sea lion was spotted with some fishing line wrapped around its neck. We believe that it could be the same one spotted last year. As it grows it will likely die due to slow suffocation caused by the line. Unfortunately it’s virtually impossible to have someone come to tranquilize and remove the line as the sea lions move on before they can get here. However, if we see it again we will report the injury.
  • Today we found a large fishing hook which must have come loose off of a sea lion. We’ve previously observed sea lions trying to remove fishing hooks from their skin by rubbing against the jetty.
  • There are quite a few sea lions all over the island now. We have been delaying our water sample that we normally take from the jetty to avoid having to chase them off, since when they are startled they climb over each other or rush off of the side of the jetty where the water isn’t very deep. The few that have come near the house don’t seem to be moving around much, just resting and getting away from the crowds.
  • With the return of the sea lions we’ve been getting bitten by little black fleas that we also saw in late spring. They were not a problem while the sea lions were not here, so we’re wondering if the two are connected.
  • Many of the young seagulls have left or are flying very well. A few of the latest hatched are still here, but the mothers are starting to leave them to fend for themselves.
  • We have been spotting the odd young elephant seal hauling out for a few hours before continuing on.
  • We’ve been noticing eagle feathers and dead adult seagulls around the island. Oddly, we haven’t seen the eagles hunting.

Maintenance: 

  • We’ve been needing to do daily fence repairs on the electric fence at the back of the island as the sea lions have been trampling it and breaking the wire and insulators that hold the wire on the posts. Hopefully with some persistence on our part they will learn to leave it alone.
  • Today we also set up the electric fence that runs between our house and the jetty/north island to prevent them from coming up around the infrastructure. They are stinky and destructive if you let them get too close!
  • We are still picking up sharp bits of tin and shingles/tar paper/ misc. litter from around the island. Some of it is from the roofs being redone recently, but a lot of it is older and becoming exposed now that the grasses are dormant for the summer.  Today we filled two buckets in an hour or two of scavenging.

A Foggy Weekend

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Weather: 

  • Sky partly cloudy, some thick fog banks passing over us
  • Visibility 5-15 miles, intermittent fog
  • Wind 0-5 knots W
  • Water calm

Boats/Visitors: 

  • Yesterday we had a great team of volunteers come to help remove the rest of the shingles and accumulated rubbish from around the island. We still have some more to go but it’s looking great!
  • Greg showed us how to set up the electric fencing to keep the sea lions off some of the island. Yesterday we set up one at the back of the island and will need to set up the fence near the jetty soon.
  • Today Corey and his family will pop in for a visit
  •  Our friend is going home this afternoon

Ecological: 

  • We spotted the seagull chick that had been attacked (and lost an eye) yesterday and it’s doing well. It is missing an eye now but is learning to fly alongside the others.
  • We saw two orcas pass just outside of the reserve on Thursday
  • The sea lions have started to come further onto the island, and there are more and more each day

 

Wacky Warm Weather

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Weather: 

  • Sky blue with some clouds. Thick fog early this morning.
  • Visibility 15+ miles
  • Wind 20-30 knots W
  • Over the past two days we had wind blowing less than 5 knots NE, which meant very warm, still conditions.

Boats/Visitors: 

  • On the 27th Guy and Corey delivered more water
  • Not too many eco-tourism boats despite the beautiful weather
  • One of our friends is visiting for a few days. Great to see a new face out here!

Maintenance: 

  • Corey and Guy also helped haul away an entire boat full of trash/recycling/unneeded items that we had gathered for removal earlier in the season.
  • We spent a handful of hours over the past few days collecting approx. 50 lbs of smaller bits of shingles and tar paper from the roofing project as well as other trash that has been exposed now that the tall grass is dry and pressed down from the animals.
  • Yesterday we washed the windows with a big brush and squeegee to get rid of all of the seagull poop that had blown onto them- much better!
  • We noticed some bricks protecting a cable by the crane shed were missing, but upon further investigation it turned out that they were simply knocked out of place and buried in the tall grass. We were able to unearth them and get everything back in place.