Stinging Marine Creature With Tentacles

Puzzle 2 of Hot Things Piece of Cake Pack

Question is: Stinging Marine Creature With Tentacles

and the answer is: JELLYFISH

Word Meaning:

JELLYFISH — An almost transparent aquatic animal; any one of the acalephs, especially one of the larger species, having a jellylike appearance.

Definitions from Wiktionary.