The Sea-mouse (Aphrodite aculeata) is a species of worm in the Aphroditidae family.

This species inhabits seabeds with soft substrates, in both deep water and shallow waters. This species is between 10 and 20cm in length, and as it's name suggests, it is covered in grey-brown hairs, which cover the scales below. There are about 40 segments, but these are hard to see under the hairy body.

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