marine animal vs animal

marine animal and animal both are nouns.

Word	Noun	Adjective	Verb	Adverb
marine animal	Yes	No	No	No
animal	Yes	Yes	No	No

As nouns, animal is a hypernym of marine animal; that is, animal is a word with a broader meaning than marine animal:

marine animal: any of numerous animals inhabiting the sea including e.g. fishes and molluscs and many mammals
animal: a living organism characterized by voluntary movement

Other hypernyms of marine animal include animate being, beast, brute, creature, fauna.

marine animal (noun)	animal (noun)
any of numerous animals inhabiting the sea including e.g. fishes and molluscs and many mammals	a living organism characterized by voluntary movement

marine animal (adjective)	animal (adjective)
	marked by the appetites and passions of the body