Coryne muscoides  Coryne muscoides is a species of athecate hydroid belonging to the family Corynidae. It is a species of the north-eastern Atlantic Ocean and the Mediterranean Sea. This is a many-branched rose-coloured hydroid, up to 15 cm tall with distinctive ringed stems and branches. Each branch ends with a cluster of knobbed tentacles. It can be found in deep rock pools and attached to large seaweeds.