Cuttlefish vs. Starfish — What's the Difference?

Cuttlefish or cuttles are marine molluscs of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, and nautiluses.

Echinoderms characterized by five arms extending from a central disk

Any of various marine cephalopod mollusks of the family Sepiidae, having eight arms and two long tentacles, a calcareous internal shell, and a broad body.

Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars.

Any of various squid-like cephalopods (marine mollusks) of the order Sepiida that have eight arms, two retractable tentacles, and a calcareous internal shell, and can eject a dark ink when threatened

A marine echinoderm (invertebrate) with five or more radiating arms. The undersides of the arms bear tube feet for locomotion and, in predatory species, for opening the shells of molluscs.

Ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell

Any of various marine echinoderms of the class Asteroidea, characteristically having a thick, often spiny body with five arms extending from a central disk. Also called asteroid, sea star.

Any of various asteroids or other echinoderms (not in fact fish) with usually five arms, many of which eat bivalves or corals by everting their stomach.

(obsolete) Any many-armed or tentacled sea invertebrate, whether cnidarian, echinoderm, or cephalopod.

(slang) A woman (or, less commonly, a gay man) who reluctantly takes part in sexual intercourse, and lies on the back while spreading the limbs.

The anus. Category:en:Pornography

(intransitive) To assume a splayed-out shape, like that of a starfish.

(transitive) To form into a splayed-out shape, like that of a starfish.

Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star-shaped and usually has five rays, though the number of rays varies from five to forty or more. The rays are often long, but are sometimes so short as to appear only as angles to the disklike body. Called also sea star, five-finger, and stellerid.

The dollar fish, or butterfish.