a
Marine creatures live in the marine.
He is responsible for studying as well as protecting the well being of the aquatic sea creatures
For anything
Marine creatures like sharks existed in the Jurassic. Marine reptiles like icthyosaurs, plesiosaurs, and thalattosuchians also existed. Thalattosuchians are fully marine reptiles.
The study of underwater creatures is called marine biology. Marine biology focuses on the biology, ecology, and behavior of organisms that live in saltwater environments, such as oceans, seas, and estuaries. Marine biologists study a wide range of organisms, from microscopic plankton to large marine mammals.
dolfin
Marine creatures are MADE for salt water ONLY. That's why they are able to be SURROUNDED by water.
because they are Marine biologists
Carnivorous marine creatures eat the smaller fishes from them & the seabirds
You might be thinking of marine zoology, which is a branch of marine biology. It (marine zoology) deals with the "critters" or creatures or animals in the marine environment. Certainly at the very "end" of the scale of marine creatures are living things that might be either animal or plant in nature. We usually see the more general term marine biologist in use to define someone who works in this area, and then a specialty under that umbrella.
barnickles
Dolphins