Sea Sausage 

Slang for Merman cock.

That mermaid had herself some sea sausage and eggs for breakfast.

Sea Sausage by beefjerkeyAlDente June 19, 2012

Sea Sausage 

It's a chunky ass seal.

Person 1: Yo look at that sea sausage!
Person 2: That's a seal.
Person 1: That's what I said.

Sea Sausage by Tis I, Jim. October 15, 2019

Purple Sea Sausage 

The part of the anatomy that resides between the legs of a male diver or swimmer. The color becomes a vivid purple when excited & sometimes even when there is a present threat. When in this state of awareness the Purple Sea Sausage has been known to use its defense mechanism, spitting a thick white substance to entangle & disorient the attacker.

As the Calypso was anchored in the waters off Panama, John Paul encountered a Purple Sea Sausage in an excited state as it was chasing the rare & beautiful Soft Shelled Brown Anus, (pronounced A-noose.)

Purple Sea Sausage by krandma October 9, 2008