What is the only mammal bereft of a pleural space, and what is the reason for this unusual modification?
A) Kangaroos, to minimise lung bruising from hopping activity.
B) Pygmy possum, to allow very small lungs the ability to expand sufficiently.
C) Bats, to facilitate flying and minimise sonar disruption.
D) Emus, a vestigial remnant from adaption to a terrestrial existence.
E) Elephants, allowing them to breathe through their trunks at depth.

Question

Quizplus · Accepted Answer

Elephants are the only mammals without a pleural space, which is an adaptation that allows them to breathe through their trunks while submerged underwater. This unique feature helps them to snorkel in deep water, supporting their semi-aquatic lifestyle.

What Is the Only Mammal Bereft of a Pleural Space