Crestwood Academy - Day 2

This morning found the students on Indian Point beach to study the intertidal environment.  Afterwards students returned to the lab to classify many of the marine invertebrates collected yesterday and this morning.  After lunch, behavioural experiments were conducted.  Some tested the length of time it takes for echinoderms to right themselves after being turned over. Others tested the feeding rate of barnacles at various temperatures and the response of various other arthropods to light.

 

Here Tracey explains the lab procedure.

 

Each bowl contained at least three creatures from different phyla.

 

Students from Crestwood Academy take their work seriously.

 

This Green Crab was found to be missing a claw and one leg.

 

When this sea star flipped it ended with two legs crossed. Ta DA!

 

Here the students are attempting to sort and classify various types of marine algae.

 

By spreading it out, this student gets a better look at the blade of the seaweed.

 

An example of a variety of sizes of Green Sea Urchins.

 

These students are keeping a close eye on water temperature while observing the feeding rate of barnacles.

 

Here they are testing the crab's response to light.