Question

Why few plants able to survive in deep water ocean

Answer 1

Deep in the ocean, the pressure is high and the temperatures are low. However, plants and animals can still thrive in those places that were once seen as impossible for sustaining life. Far fewer varieties of plants live in the deep ocean, compared to shallower waters that receive more sunlight. Sunlight fuels photosynthesis, the process in which plants and bacteria convert energy from light into the fuel the organisms need to survive and grow. So where there's very little sunlight, only a few types of plants survive.