Blobfish live in the seas and oceans near Australia and New Zealand. They stay largely on the seabed or ocean floor between 600 to 1,200 metres deep. They can grow up to 30 centimetres long. They have very large heads, small bodies and thin tails. Their name comes from the fact that they look like a large blob of jelly. This is because they have no muscles. They float in the water and swallow things that swim past them, like small crabs and shellfish. Even though humans do not eat blobfish (they are inedible), fishermen accidentally kill thousands each year. They are caught in the nets of fishing boats. Scientists are worried that this will put the blobfish on the list of endangered animals.