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http://www.noodletools.com/noodlebib/mybib.php?printBib=1

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Humpback whales are very large and powerful, and this comes in handy when fighting off predators. In many occasions a predator will not attack because they will spend too much energy trying to kill the whale then they will get from it. The Humpback whale also has large powerful flukes that it slams at predators within range.

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Humpback whales have blowholes located on the top of their heads. While underwater they are covered by flaps that keep water out. When the whale wants to eject water it doesn't have to come all the way out, it just has to poke the top of it's head out slightly. This helps reduce the loss of speed.

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Humpbacks send out low frequency calls from 20-200 Hz. Scientists think these calls are to attract mates, as well as location threat and identification.

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Whales have a great sense of hearing, and can detect sounds from miles away. This can be a huge advantage for survival underwater because sound travels 4 times faster. The Humpback whale can use it's excellent hearing to detect predators from a great distance.

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Humpback whales live in every ocean, and they move around depending on the season. Feeding grounds are in colder waters, and breeding grounds are in warmer waters.

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When the humpback whale dives, it will reduce it's heart rate and their metabolism, in order to deplete oxygen stores at a slower rate. Also while diving blood is taken away from extremities, allowing them to breath much slower than other mammals.

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Humpback whales usually go underwater for 5-10 minutes, however they can hold their breath for much longer if needed. Unlike most mammals they only hold 25% of their oxygen in their lungs. The rest is stored in the hemoglobin molecules in their muscles.

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Humback Whales are mammals because they breath air, give live birth, have hair (little), and nurse their young

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Humpback whales migrate to warmer water to give birth to their young. Whales do this because baby whales don't have blubber to keep them warm, so being born in cold waters would most likely kill them.

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Humpback whales spend their time feeding in cold costal waters, but migrate to warmer areas when calving.
http://www.fisheries.noaa.gov/pr/species/documents/humpback_dps_identification.jpg

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The Humpback whale, dispite its large size feeds on small crustations like krill, plankton, and small fish. An average Humpback whale will eat up to 3000 lbs of food per day.

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A baleen whale such as the Humpback have curved upper jaws, that hold their baleen plates. Baleen plates are stiff, wiry bristles that are used to keep food inside the whales mouth but let water out. The whale will swim with it's mouth slightly open and any food swimming around in the area will be swept in. Then the whale raises it's tongue and water filters out through the baleen, and the food is trapped.

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A Humpback whale will use echolocation to detect where other structures, whales, predators, or prey may be located. They have this ability because it can be hard to see down in the deep ocean. A whale has air pockets inside their head, and they have the ability to squeeze air between the pockets. The sqeezing of air creates a lot of noise, and sends out sound waves that travel through the water, and bounce off of structures that the whale needs to keep track of. The waves then bounce back to the whale, and it will form a sound picture from the waves.

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Whales have a thick coat of blubber under their skin. The blubber help the whale float, and stay warm since it does not have fur like other mammals.

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An adult humpback whale can be as long as 15 meter, or 45 feet.