What are killer whales?\nOptions:\n- (A) red and black\n- (B) They have thick fur\n- (C) dangerous\n- (D) sharks\n- (E) deep sea creatures\n- (F) marine species\n- (G) Absorb light\n- (H) animals
Let's think step by step.
(F)
Marine species live mainly in shallow coastal waters.

Killer whales prefer shallow and colder coastal waters.

Killer whales are a marine species.

.

The answer is (F)