Sea Squirts: The Ocean's Amazing Sponges!

Sea squirts, also called ascidians, are super cool ocean animals that look like little bags or blobs. They have a tough outer skin, like a cozy jacket, made of something called cellulose. Most of them stick to rocks or shells on the ocean floor, but their babies can swim around!

They are like living water filters, cleaning the ocean one sip at a time. There are tons of different kinds, and they come in all sorts of shapes and sizes, from tiny to as big as a lunchbox!

Sea squirts are filter feeders, which means they eat tiny bits of food floating in the water. They have two special tubes, like little snorkels. One tube sucks water in, and the other tube pushes it back out.

As the water goes through their bodies, they catch the yummy bits of food, like plankton. It’s like they’re constantly sipping from a giant ocean smoothie! They live in oceans all over the world, usually where the water isn't too salty.

There are about 2,300 different kinds of sea squirts! Some live all by themselves, like little hermits. Others like to hang out in groups and stick together at their bottoms, forming little neighborhoods.

Then there are the compound sea squirts, which are like big apartment buildings made of many tiny sea squirts living together. These colonies can get quite large and look like colorful sponges or weird blobs on the seafloor.

Sea squirts are important because they help keep the ocean clean by filtering out tiny particles. They are also fascinating because they are related to animals with backbones, like us! Scientists study them to learn more about how animals evolved. Plus, some sea squirts can even regrow parts of their bodies if they get hurt. How cool is that? They are a hidden treasure of the ocean world!