Respuesta :

Answer:

Coral reefs are often called the "tropical rainforests of the sea" for their astounding richness of life. Due to their structural complexity, corals are one of the most productive ecosystems on Earth, providing important services to mankind including fisheries, coastal protection, medicines, recreation, and tourism.

Explanation:

Because it houses so many diverse species. Sea animals have been able to thrive in coral reefs. This ecosystem is the most productive on earth.