Exam 13: The Nekton: Swimmers of the Sea

Objections to the "stepping-stone" hypothesis, suggesting that deep-sea hydrothermal vent organisms are dispersed by taking advantage of whale falls (like stepping-stones), include all of the following except ________.

The Chondrichthyes include organisms such as ________.

To be considered marine, a species must spend how much of its life in the marine environment?

The largest sharks and rays are ________.

Whale falls support a large community of organisms including sharks, crabs, and bacteria.

The largest animals in the world are the ________.

One conservation method used to protect turtles from trawl nets uses ________.

Which of the following is not true about both shorebirds and seabirds?

Pelagic seabirds nest at sea.