Which marine ecosystem is the equivalent to a tropical rain forest ecosystem in terms of biodiversity?

Question

Quizplus · Accepted Answer

A coral reef is the most biodiverse marine ecosystem, as it contains a wide range of species from all levels of the food chain and can support up to one-third of all marine life. The abyssal and bathyal zones are deep-sea areas with low biodiversity due to harsh environmental conditions. An estuary can have high productivity and biodiversity, but not to the extent of a coral reef.

Which Marine Ecosystem Is the Equivalent to a Tropical Rain