The correct choice is sea grasses (seagrasses), because Florida seagrass beds are a natural habitat that provide food and shelter for many marine species. In Florida’s coastal waters, seagrasses are part of the core ecosystem alongside reefs, mangroves, and estuaries.

[4] [4] [7][1] [4]
OptionProvides a natural habitat for marine life?
Aquatic nuisance speciesNo
Sea urchinsNo
Sea grassesYes
Plastic bottlesNo
Sea grasses are the best answer because they are explicitly described as important marine habitat in Florida, supporting fish, crustaceans, turtles, and other wildlife.