Tag Archives: thermoregulation

August 4

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Wildlife Notes:

There were many humpbacks to the south of the ecological reserve again today. They were too far away to get any decent photos even with the 400mm lens.

The population of the California sea lions is increasing by a few each day. I woke up this morning to their barks in the east bay.

Facility work:

  • Clean the 44 solar panels
  • Check the electrical systems on the station boat
  • General tidying around the island’s buildings

Vessels:

  •  Ecotourism: 19
  •  Private: 5

Weather:

  • Sky: Partly cloudy
  • Wind: West 15-26 knots
  • Sea: 2′ to 3′ chop
  • Air temperature: low 12 °C, high 17 °C
  • Seawater temperature at max flood: 11.7°C

Photos from today:

*All wildlife photos are taken at the furthest distance possible, and may be cropped to improve detail.

Sea Lion Thermoregulation

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The barometer rose steadily throughout the day as a moderate westerly breeze whipped across the reserve. The clouds parted mid morning to bring an afternoon of sun and a high of 13.1 oC.

The solar panels weren’t the only things soaking up the sun’s rays. Sea lions were floating in small groups with one or all four flippers exposed to the air, using thermoregulation to their advantage. The sun warms the seal’s flippers, which are poorly insulated, then the warmed blood is pumped throughout their body.

One whale watching boat was seen in the reserve, after they spotted humpback whales surfacing a few kilometres to the east of the Race Rocks.

Courtney visited on the Second Nature to give a quick lesson on some of the mechanical systems on the island.

Maintenance tasks were performed today: running the generator, cleaning the solar panels, tracking down equipment and parts, figuring out how to use the equipment, vacuuming, flag care, and sweeping the paths.

Sea lions thermoregulating by sticking a fin out of the water.

Sea lions sticking flippers out of the water for thermoregulation.