Sand lizardfish

Ocean Freedom, Vlasoff.
Think of one of those human statue buskers, give it a mouth that can fit around your whole body and then put some teeth on its tongue to help it hook onto its prey and then you will have a fair image of the sand lizardfish.
•These fish however, make easy targets and are eaten by dolphins. Dolphins that put a basket sponge on their nose before they attack so they don't hurt their nose when they ram it into the sand.