A marine scientist in California wants to study the habitat of Atlantic blue crab, a species of crab found around the Chesapeake Bay. How can he best study the habitat of these organisms?

Collect and analyze water samples from Atlantic blue crab habitats within the Chesapeake Bay. Transfer a population of crabs into an aquarium to observe how they behave in the lab. Move crabs from the Atlantic to the Pacific Ocean to test if they survive in another environment. Breed a new line of Atlantic blue crabs that can survive in cooler climates than the Chesapeake Bay.