Corals form large colonies in shallow and what waterways
porous Thames warm deep water calm open ocean cold
A B C D E F G H
Tropical fishes require warm water.
Corals form large colonies in shallow warm waterways
Corals form large colonies in shallow and what waterways (A) porous (B) Thames (C) warm (D) deep (E) water (F) calm (G) open ocean (H) cold