Listen to the sounds of beluga whales! Did you know that a hydrophone is an underwater device that detects and records ocean sounds from all directions? This video shows a hydrophone in use to play the sounds of beluga whales beneath the boat in the Churchill River. Beluga whales are very vocal whales and listening to this video it is easy to hear why they get the nickname canaries of the sea. | Frontiers North Adventures

Up to 800 beluga whales were seen migrating to the Arctic, where they give birth and molt dead skin. | National Geographic