(A)      (B)    There are two different pinniped families represented in the above images. Identify the family for each image as well as compare and contrast the morphological and physiological characteristics of these pinniped families. You should, at minimum, sufficiently discuss 4 morphological and 2 physiological characteristics. 

Which dolphin species has the shortest rostrum of any cetacean species?

How do marine mammals avoid decompression sickness during deep dives?

Briefly compare and contrast the infraorders mysticeti and odontoceti making sure to provide sufficient details on the characteristics that they share in common and the differences that separate both infraorders. You should discuss a minimum of 4 characteristics when comparing and contrasting the infraorders. 

Sea otters have a thick blubber layer for insulation in cold water.

What is the family name of the sperm whale?

Which Odontocete family contains the most diverse marine mammals?

What is the primary function of the rete mirabile in diving marine mammals?

Bradycardia during dives is a mechanism to conserve oxygen.

Dorudon was the first whale reconstructed with a tail fluke.