In my opinion whales are the most majestic and beautiful creatures of the sea. They span anywhere from 9 feet to 100 feet depending on the whale. Most whales eat plankton, small fish, shrimp, squid and krill. Unlike most creatures in the ocean whales are classified as mammals. Male whales are called bulls and females are cows. Whales breath air like all mammals, which means they can't sleep with for too long or they will drown. Whales birth one calf after every mating season.
The smallest whale is the Dwarf Sperm Whale, it's an average of 9 feet long and can weigh around 400-600 pounds. This whale is being pushed to the brink of extinction but are making a comeback with an estimated population of 11,000. The largest whale is the Blue Whale, with an average length of 96 feet and weighs in at about 170 tons. An average age for one of these titans of the sea is about 100 years. Unfortunately for this gentle giant, its population is in danger due to constant poaching and habitat loss.
http://animals.nationalgeographic.com/animals/mammals/blue-whale/
http://www.whalefacts.org/dwarf-sperm-whale-facts/
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