The Marine Mammal Center and California Academy of Sciences are reporting cause of death for one.

Tuesday’s (September 29) sighting of a gray whale swimming and possibly feeding right off the Stanley Park Seawall brings recent sightings up to three in that area. It isn’t clear if it is the same whale or different whales in the widely reported incidents since August 12. One whale, perhaps the same animal each time, was observed for days in the same area in English Bay, sometimes travelling into Burrard Inlet and off West Vancouver’s Ambleside Beach.

Sixteen gray and humpback whales have been reported stranded off Washington and Oregon since April 3, the largest number in nearly two decades.

Ocean scientists are concerned about dead gray whales that have washed up on the US West Coast this year at the highest rate in almost two decades.

A dead male grey whale that was found floating between Sidney Island and James Island on Thursday has been towed to Fisheries and Oceans Canada's Institute of Ocean Sciences in Sidney for a necropsy.

A dead grey whale was found floating in Boundary Bay, near the United States border, this week. It's the sixth grey whale to have been found dead in B.C. waters this year.

Since January 1, 2019, elevated gray whale strandings have occurred along the west coast of North America from Mexico through Alaska. This event has been declared an Unusual Mortality Event (UME).

The "unprecedented" warm water in the Pacific caused a massive toxic algae bloom from California to Alaska.