3/21/2023 0 Comments Orca relax sounds![]() ![]() The archipelago belongs to the “A” pods – resident fish-eating killer whales of the Northern Resident population. The Biggs whales – mammal-eating transient orca – use calls that are completely different from the resident orca calls. The whales are identified by audio recordings of their calls, as well as, photo-identification of their dorsal fins and markings.Įvery pod of resident orca uses a different dialect. Using underwater hydrophones, Raincoast monitors underwater for these whale calls. As the whales swim through inlets, they communicate to one another in a rich language of calls and echolocation. Raincoast Research has been studying orca in the Archipelago since 1984 – focusing on their natural history and use of sound. But within the archipelago, its waters are so silent that the calls of once abundant orca could be heard echoing back and forth off the cliffs, like the ringing of church bells. Outside the quiet inlets, whales must contend with the chatter of pebble beach, the roar of tidal action, the scream of speedboats and the underwater noise of big ships that obliterates all other sound. Its inlets, islands and estuaries provide protective marine habitat, food and a haven of silence for these whales that use sound to navigate. Musgamagw Dzawada’enuxw territory (Broughton Archipelago) is an ideal environment for orca (killer whales). © Tavish Campbell Orcas/Killer whales – Orcinus Orca
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