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1. Wings

The eagles' wingspan and size vary from species to species. According to the PBS program "Nature," some of the largest eagles "can weigh more than 20 pounds and have wings that spread 8 feet across." Eagles are notoriously fast fliers, reaching speeds of more than 150 mph while diving for prey.

Some eagles have long, broad wings for gliding on air currents while others utilize shorter wingspans and larger tails for maneuvering through dense forests. According to National Geographic, some eagles, including the golden eagle, use their wings "to maintain territories that may be as large as 60 square miles."

2. Talons

An eagle's most useful asset may be its talons. These birds of prey rely on their sharp talons to hunt and grip prey such as mice, rabbits and squirrels. Some species of eagles have been known to grab turtles from the ground and drop them from great heights to crack the shell.

Some eagles also use their talons for swooping near the water and grabbing fish. The Nature website notes that some of the larger eagles "can kill and carry off prey as large as deer and monkeys."

Eyes

The term "eagle eye" came to be for a reason. According to "Nature," an eagle's eyesight is among the best of any creature known to man. Eagles can spot a small animal of prey from miles away.

"Nature" credits eagles' vision capabilities to the size of their eyes, which are "very large in proportion to their heads, are densely packed with sensory cells. While humans typically have 200,000 light-sensitive cells per square millimeter of retina, eagles may have 1 million --- five times more."

Eagles are also capable of seeing five basic colors, making it easier to spot prey from the air.

Read more: Body Parts of an Eagle | eHow.com http://www.ehow.com/list_6849567_body-parts-eagle.html#ixzz2EBUpBfL8The seal has the following external (outside) parts or anatomy:

Eyes

Whiskers

Nostrils

Pointed front teeth

Neck

Fore (front) flippers with claws

Underbelly

Blubber (Keeps the seal warm)

Hind (back) flippers

Fur (covering its body)

Ears, which do not have an external flap and can close underwater

Seals have adapted to their environments, developing physical features and behaviours for their survival. Here are a few examples of how seals look, act, eat, keep warm, cool down...

Whiskers feel for fish in darkness:Seals can bring their whiskers forward when they need to feel for fish in the darkness of deep or murky waters. A seal's sensitive whiskers can feel the slight changes in water currents around them when fish are swimming in schools.

A body for swimming:The seal has a body perfectly adapted for life in the water. Their body is shaped to go through the water with a minimum of resistance. This is called "streamlining". The flippers of seals propel them through the water. Fur Seals and Sea Lions use their front flippers like wings to 'fly' through the water.

Fur for warmth:Fur Seals have two layers of fur. One is short, fine and forms a very warm layer closest to the seal's body. The other hair is a much longer 'guard hair' which forms an outer waterproof layer. These two layers of fur would be like us wearing a jumper under a wetsuit when we go swimming. Sea Lions have a coat with only one layer. There is very little under-layer of finer hairs.

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Claws are great for grooming:To keep their fur coats in good condition, seals wash and groom their fur a lot. The claws on the hind feet stick out to scratch when the seal bends its flipper.

'Keeping Cool' - Thermoregulation:Fur Seals often need to cool down, as their coats are so effective at heat insulation. They do this by 'sailing'. The seal's hairless flippers have a lot of blood vessels running through them. One flipper can be held out of the water so the wind passes over its surface. The evaporation of the water from the wet flipper cools the flipper and the blood flowing through it. Seals do this when they need to regulate their body temperature. It is called "thermoregulation".

Keeping a look-out:Looking directly backward is a behaviour used by male seals to keep watch over their territory of rock platforms and rockpools. This way they can see all around and behind. During the breeding season, the larger male seals become protective of a territory (and the females within it). They need to keep a close watch on all parts of their territory so no rival males can steal the favourable rock pools or any female seals.