What is the difference between true seals, and fur seals and sea lions?

Question

I need differences between the families Otariidae, Phocidae, and Odobenidae. Or a small paragraph about each of them. Thank you so so so much, and I truly appreciate any answers!!! =]

Answer 1

True Seals

Seals without ears are called true seals. Their rear limbs are swept back beside the tail, which propels them through the water with a side-to-side sweeping motion. They can only move on land by wriggling forward in series of jerks. They have a cute hearing despite their lack of outer ears. They have a coat of coarse hair only. Some examples of these are Elephant Seal, Hooded Seal, Leopard Seal and Harbour/Common Seal

Fur Seals (otherwise known as sea bears)

These, too, have a coat of hair but also an undercoat of fur. They evolved from land mammals and their legs have become flippers. Hence, they are less clumsy on land. They have ears and use them as oars when swimming They walk with all for legs. Some examples of them are the Alaska/Northern Fur Seal,  Southern Fur Seal.

Answer 2

What is the difference 'among' [when comparing] more than two things!

"Among refers to groups:

"Among all the libraries, UVic's is the warmest."

Between is only used for pairs:

"He was stranded between logical positivism and positive logicalism."