Lusca

In Caribbean folklore, the Lusca is a name given to a sea monster said to exist in the region of the blue holes nearby Andros, an island in the Bahamas.
Clipping of Mollusca, "(Mol)lusca"; a phylum containing octopus, squid, cuttlefish, and other cephalopods. Due to how the creature always appears with some mollusk feature or form therefore such as tentacles or arms.
It is described as a giant octopus, a giant cuttlefish, or a half shark, half octopus.meer