The biggest threat to coral reefs, and tropical rainforests is poachers and distruction.
global warming
Tropical rain forests are the most diverse ecosystems in the world.
They are tropical coral reef fish so the biggest threat to them currently is global warming and its effects on the tropical reefs like the bleaching (killing) of coral.
Tropical climates.
Pollution is a natural threat to coral reefs.
Corals live in tropical waters inside coral reefs.
yes
Habitats
A black coral is any of various tropical corals of the family Antipathidae.
tropical or sub-tropical waters & coral reefs
On coral reefs. Generally these are found in warm, shallow, tropical seas.
One bajillion
Tropical seas.