The blood vessels of a blue whale are so wide that an adult trout could swim through them.A whale’s heart beats about once every six and a half seconds.Bottlenose whales can dive 3,000 feet in two minutes.Whales can get lice.A blue whale’s heart is as big as a compact car.Whales grow faster than any other animal in the world. At its peak, a growing blue whale gains between 200 and 300 pounds a day. A right whale’s eyeball is about as big as an orange.A sperm whale’s brain weighs 20 pounds, the largest in the animal kingdom.