Dictionary

Cerata

Finger-like projections on the back of a nudibranch (sea slug).

Dorsal Fin

The fin running across the back of the fish.

Emarginate Tail

Shaped as in the diagram to the right.

Hectocotylus

The modified arm of a male octopus or squid, used to transfer sperm to the female during reproduction

Tail: Emarginate

Shaped as in the diagram to the right.

Tail: Truncate

Shaped as in the diagram to the right.

Truncate Tail

Shaped as in the diagram to the right.

 

Recommended Book: The Facts on File Dictionary of Marine Science, Barbara Charton (Editor), 400 pages, 2001.
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