Which of the following are not extremophiles? a. Pompeii worms b. bacteria in boiling hot springs c. fish living in open oceans d. fish living in water below freezing

Extremophiles are organisms that are able to thrive in extreme conditions like high temperature and pressure. Pompeii worms are found in the hydrothermal vents of Pacific oceans. All other organisms given have conditions living in not the normal range. Hence the answer is C. fish living in open oceans

C) Fish living in the open oceans is not extremophiles, whereas other answers are.