Other fjords on the British Columbia Coast have similar rapids, also called skookumchucks (strong waters in the Chinook Jargon, the old coastal trade language), which like Sechelt Inlet are caused by the typical shallows and narrows near the mouth of a fjord as the volume of water inside the fjord's depths tries to pour out to, or in from, the more open waters beyond.
The latter is about 15 km (9.3 mi) in length and emerges on the main inlet just inside the inner mouth of the Skookumchuck Narrows.
From early April to late September 2007, the inlet was a habitat for over 200 Pacific white-sided dolphin.
These social mammals seemed to enjoy seeking the attention of their human observers.
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