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What is a Sea Squirt?

Sea squirts are marine organisms belonging to the family Ascidiaceae. Though seldom noticed or distinguished by casual divers and snorkelers, they are highly interesting and important. They are diverse and colorful, and inhabit all types of marine habitats. They filter bacteria from seawater and can store heavy metals in their tunic (a flexible external covering or 'exoskeleton'). A number of important products have been identified in sea squirts, making these organisms a good candidate for discovery of potential medicinal compounds from the sea.

Children Speak!

This page is for you. If you have any poetry, artwork, photos, comments, experiences about the sea, news, suggestions, questions -- anything at all that you would like to say about our ocean -- send it to

and we'll post them on this page. Don't forget to tell us a bit about yourself (your name, age, the name of your town or city and the name of your country).

Adults who write for children are most welcome too!