Velella vellella are actually colonial hydroids, related to jellyfish and most closely related to the Portuguese Man-of-War. They occur only rarely in the waters of Race Rocks, coming in apparently with warmer Pacific currents. They were found washed up and … Continue reading
Shamsher is pointing to a cluster of Lottia digitalis in the high intertidal area by peg 5b. the artificial tidepool, this cluster of Lottia digitalis has been in the same place, to the left of the built stone wall since the building of … Continue reading
Physical Description: Mytilus trossulus has a shiny blue-black to black or brownish thin, long shell. Its exterior is smooth with fine lines. The interior of the shell is dull blue with a darker edge. They can be up to … Continue reading
Cormorant thermo-regulating while drying wings and Sea lions rafting while exposing fins or tail for heat exchange and thermoregulation. below , Glaucous-winged gulls panting on a hot July day 9. C4 and CAM adaptation for xerophytic conditions eg stone crop, … Continue reading
The “ECOSYSTEM PARADOX” : The assemblage of organisms and the physical, chemical, geological, and biological factors that determine their numbers, is what an ecosystem is all about. This community of organisms and the non-living environment with which they interact is … Continue reading
During the Johan Ashuvud project 2004, students explored the intertidal with Garry Fletcher. They examined various organisms as well as the artificial tidepool. In this video, we also get a chance to meet all the students taking part in the … Continue reading
Introduction:In this file, we show the process and results of an investigation on some specific examples of horizontal structure of ecosystems Objectives: After doing this lab, you will be able to: a) Observe a species in its environment and determine … Continue reading
n the first week of June 2004, four students and two researchers stayed at Race Rocks for an intensive week. Sponsorship for this week comes from the Johan Ashuvud memorial fund. Webcasts of the day’s events took place every night and on … Continue reading
At Race Rocks we have a tidal range of about 3 metres. For tidal Level predictions , from the closest station at Pedder Bay see this link https://tides.gc.ca/en/stations/07080/predictions The link below is for the Race Passage … Continue reading
Size: Can range between 5 cm to 9 cm in width. Description: Oval shaped and low and dome shaped shell. It is covered by small interlacing plates which are covered by stiff mossy dark brown hairs. The inside of the … Continue reading