Seasquirts also known as Ascidians or Tunicates and can be found growing on an oyster reef. They are small animals that attach themselves to an oyster shell and remain there throughout their life. They are a very diverse group of invertebrates, whose life style is similar to
sponges but their structure is more complex.
Seasquirts spend their time filtering small particles from the Bay water. They all feed by sucking water in through one opening and blowing it out through another. Seasquirts can squirt a stream of water as far as two feet away.
Many are individual animals, but living in a group, others form attached colonies. These colonies have special structures, like stems that support the whole colony.