Answer:

salpa

Answer	Crossword Clue
SALPA	Oceanic tunicate.
SALPA	Tunicate.
SALPA	Tunicate fish.

SALPA	Sea squirt.
SALPA	Oceanic tunicate
SALPA	Sea mollusk
SALPA	Tiny creature in warm seas
SALPA	Sea squirt
SALPA	A tunicate
SALPA	Marine creature with a transparent, saclike body
SALPA	Transparent sea creature