Blue whales are the largest whales. They are 100 feet long and weigh more than 200 tons. The heart of a blue whale is the size of an automobile, and the tongue weighs about as much as an elephant. More »

The largest whale recorded in history is the blue whale. Blue whales weigh up to 200 tons and grow to lengths of 100 feet. Their hearts weigh as much as an automobile, and their tongues weigh as much as an elephant. More »

Whales have evolved to swim easily through water using vertical strokes of their tails, while their flippers aid in changing direction, balancing, and stopping, according to the National Marine Life Center. Their streaml... More »

Whales are mammals that have an incredibly size range, yet all whales fall between 13 feet long and 90 feet long. The blue whale, the largest known whale or mammal, ranges from around 70 feet to 90 feet. Most other well-... More »

Humpback whales range between 48 and 62.5 feet in length and can weigh up to 40 tons. As baleen whales, humpbacks' consume krill, plankton and small fish. The complex vocalizations of humpbacks are called songs and can l... More »

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Humpback whales feed on fish, krill and plankton. Adult humpbacks have no natural enemies. Scars on juveniles suggest that they may be attacked by killer whales, but this has not been observed directly. More »

Killer whales, also called orcas, are conceived via sexual reproduction between a sexually mature bull and a cow in estrus. The gestation period is approximately 17 months, at the conclusion of which a calf typically mea... More »