no.
I assume you mean "A" sea slug. No, a sea slug is not a fish, but an echidnoderm.
As much sea as a sea slug could chug if a sea slug could chug sea.
The entire sea slug is composed of cells.
A sea slug, also called marine slug, is the same animal as a snail. The slug does not have a shell. The sea slug moves at a very slow rate.
Another name for a sea slug is a Sea Cucumber.
in the sea
A Sea Ottier is the "smalliest" Mammal in the sea.
Being a sea slug, enjoying their sea slug-y lives, and getting it down with the lady sea slugs. XD
sea cucumber
most things living are referred to as animals, bar plant life yet the word animal is stripped into different forms such as mammal, invertabrate etc and sea slugs do not have a back bone to my knowledge and therefore are invertibrates.
ocean
Chromodoris Naiki is a sea slug