Vancouver Island Trip Death Toll Rising: At least 5 people died after a tour boat with 27 people on board sank off the coast of British Columbia Sunday Rescue .
The boat with 27 people on board sank off Tofino, British Columbia, west of Vargas Island.
Devastating Pictures Capture moment whale-watching boat carrying 27 people sinks off British Columbia leaving at least five dead and four unaccounted for .
Investigators are trying to determine what caused a deadly whale watching tragedy near Tofino, British Columbia. The 65-foot vessel sank into the sea, and at .