The Coelocanth is a very interesting, quite primitive fish that live deep in the ocean. Watching these beautiful creatures on a nature documentary, you notice that they are able to stay basically at one position in the water with only slight movements of its lobed fins. This indicates that
A) you don't have to be athletic to get on a documentary.
B) the density of the fish is less than the density of the water.
C) the density of the fish is greater than the density of the water.
D) the density of the fish is about equal to the density of the water.

Question

Quizplus · Accepted Answer

The ability of the Coelacanth to maintain its position in the water with minimal movement suggests that its density is roughly equal to that of the water, allowing it to achieve neutral buoyancy.

The Coelocanth Is a Very Interesting, Quite Primitive Fish That