12 reactions |  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 | Facebook

99K views · 1.3K reactions | Beluga #whales have a distinctive protuberance at the front of their heads called a melon — this compartment houses their echolocation organ. A beluga’s melon is malleable, meaning its shape is changed during the emission of sounds. They are even able to change the shape of their head by blowing air around their sinuses to focus the emitted sounds!  | Science Channel | Facebook