Monday, August 3, 2009

Assignment 3

Aug 2nd.

Partly Cloudy

Lovell’s Island

Around 75 degrees

Today we started out on a boat to Lowell’s Island along the way we talked about how species are introduced to the land. We talked about how the Darwin Theory and only the strong survive. We can relate it to the species because new species must adapt, if not they will become extinct due to natural selection. When we got to Lowell’s Island also known as being one of the rare Nude beaches in New England we went up to the trial to the beach. The beach is called a cobble beach because it is very rocky with not much sand. After looking for shells and periwinkles we headed off for lunch. After lunch we spent a few hours looking at snails, berries, and crabs. Some of the questions that were asked:

  1. What species eats periwinkles by drilling holes in the periwinkles shell:

After doing some research I found that moon snail could be the snail that drills these holes.

  1. What were the unusual snails?

I looked at google imagines and I came up with that the Groove snail could be the snails we saw. And I believe they came from birds bringing them over.

3. What kind of crabs are ones we found?

I looked as well as google many of these crabs and could not find anything that resembles the crabs we found. I do agree with one of the other posts and think it could be a mud crab.

4. Snails differ in color? Did the dead ones look different than the living ones?

What causes the snails to look differ in color is not only how old they are but the sun eventually starts to fade the color of the shell. The live shells have moisture to help them keep their color unlike the dead ones that in the sand or path.

Assignment 2

After looking back me from the previous class I realize some of the things we saw were colonial tunicate. As well as a star tunicate

Joe Pereira

No comments: