Boaters capture incredible footage of humpbacks singing

A group of boaters off the coast of Maui, Hawaii stumbled upon a family of curious humpback whales. Listen to them sing as they circle around the boat.

The whales wandered so close to the boat that their vocals were captured by the GoPro camera.

"We couldn't see the male humpback that was singing, wrote Kate Sheppard on YouTube. "But he was so loud we could hear it through our hull and I could feel the vibrations through my GoPro stick."