Yesterday I went on a trip to the beach. I saw several different organisms. First I saw a sea sponge. It had a body that was not symmetrical at all, which is (1). It also belongs to group of animals called (2)as they have no backbone. The sponge feeds by (3) food out of the water. This means it separates the food from the water. Then I saw a sea star that has a body with many lines of symmetry that pass through a central point called (4). I also saw a crab that has a body that is divisible into two mirror parts by a central line called (5). It also has an external skeleton or a (6). I caught a shark which controls its body temperature by external means making it a (7). The shark is a (8) or has a backbone. It also has an internal skeleton called a (9). It was a very chilly day so I am glad I am a (10) which means I control my temperature by internal means.