The Advanced IB Biology class was welcomed back for their annual overnight trip by the Huntsman Marine Science Centre after a two-year hiatus. Friday was a fabulous day of leaning on the shore of the Passamaquoddy Bay. Saint John High students spent three-hours exploring the abiotic and biotic factors that affect life on the Atlantic rocky shore. Greyhounds determined elevation profiles for different parts of the shore. They also looked at quadrats to determine present coverage of seaweeds and the number of individual organisms that live there. We found green crabs (Carcinus maenas), side swimmers (Gammerus sp.), common periwinkle (Littorina littorea) and more. They also captured periwinkles, marked them with nail polish, set them free in the wild and went back 24 hours later to recapture them in an effort to estimate the periwinkle population at Brandy Cove.
Saturday we moved into the laboratory and performed two experiments with barnacles (Balanus balenoides), sea urchins (Strongylocentrotus droebachiensis) and seastars (Asterias rubens). It was a beautiful weekend to be learning outside. The students really enjoyed working on their graphs for the lab writeups on Friday night.