Humpback whales are not the biggest whales — that’s the blue whale. Humpbacks can grow to 60 feet (18 meters) long, and they can weigh a whopping 40 tons (about half the size of a blue whale).
Humpbacks typically travel alone or in small groups, called pods, consisting of two or three whales. When together, they communicate with each other and travel together, and moms and their young even touch fins as a possible sign of endearment. Sometimes they even help each other hunt. Found in oceans and seas around the world, humpback whales typically migrate up to 25,000 km (16,000 mi) each year. They feed in polar waters, and migrate to tropical or subtropical waters to breed and give birth, fasting and living off their fat reserves.
Humpback whales are known for their haunting songs, which are complex sequences of moans, howls and cries that often continue for hours.