Bluntnose sixgill shark (Hexanchus griseus) COSEWIC assessment and status report: chapter 10

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Special Significance of the Species

The bluntnose sixgill shark is the largest predatory shark regularly encountered in Canada’s Pacific waters. Their ecosystem role is largely unknown but they are likely the top predator (trophic level ~4.2) through much of the world’s continental shelves (Froese and Pauly 2006). In Canada’s Pacific waters immature bluntnose sixgill sharks regularly make forays into shallow waters in select locales allowing the opportunity for SCUBA divers to observe them.