"TELEGRAPH COVE, BRITISH COLUMBIA — Have you heard the mermaids singing? I have, and they sound like pearly black orca whales calling to one another as their sleek dorsal fins slice through the water past my sea kayak.
I first heard their song of the sea on a shimmering hot August afternoon in Johnstone Strait, a narrow channel in the northeastern part of Vancouver Island. Family groups (called pods) of orcas use this passage as an aquatic superhighway, speeding toward deeper waters farther offshore on their seasonal migratory odysseys. Their otherworldly vocalizations are called echolocation, and they use them to navigate, communicate and hunt in these cold, deep waters. From a nearby boat borne hydrophone I could listen to broadcasts of their conversations above the water’s surface as I paddled past."
Read more: http://vacay.ca/2016/05/paddle-among-orcas-of-johnstone-strait/#ixzz48SokLpy1