what is the Marine Habitat in Pacific Ocean?

??? The Pacific Ocean is a marine habitat. There are several different types of habitat that support different species, but they're all marine habitats.

Can you refine your question?

Habitat is a reference to the ecosystem - a place where a variety of difference species can sustain themselves.

The Marine Habitat in the Pacific Ocean is a reference to all the various creatures that make their living in the Pacific Ocean.

Water.

Habitat: by definition - a place where an organism lives. Technically, the entire Pacific Ocean is a marine habitat.

Microhabitats (smaller habitats) would include those places where organisms make their home, but looking at it on a smaller scale: in sand on the ocean floor, the leaves in a sea grass bed, crevice of a rock in a coral reef etc. Therefore, the entire Pacific is a marine habitat, with numerous microhabitats for many different species.