Blue whales can stay underwater for up to 20 minutes and often travel alone or in pairs. Witness first-hand the underwater symphony put on by blue whales, listening to these fantastic sounds during a dive. They can hear each other underwater for distances up to 1000 kilometers. Whale watching from a boat is great, but scuba diving with blue whales is indescribable. From the surface you can spot these amazing animals by their water spout that reaches up to 12 meters high. The best places to swim with blue whales are in Sri Lanka and the Pacific waters off Baja California. Learn more about when and where to encounter these magnificent whales here.