The whale, which scientists have officially named "Rio," was first spotted days ago hanging out near the Rio Vista Bridge.
More gray whales are entering San Francisco Bay, delighting spectators but increasing the risk of deadly encounters with ships, prompting scientists to deploy new AI technology aimed at protecting the animals.
The system, called WhaleSpotter, scans the bay around the clock for whale blows and heat signatures up to 2 nautical miles away, alerting mariners to slow down or reroute when whales are nearby.
A sudden surge in gray whale sightings and gray whale deaths is throwing the spotlight on the San Francisco Bay. But piecing together the possible causes requires environmental detective work on a global scale.
Wildlife experts say that an orca may have killed a gray whale that washed up on Moss Beach on Sunday. Scientists are evaluating tissue samples and expect to have more information in the coming weeks.
A gray whale found dead near Alcatraz this week is renewing concern among marine experts, who say whale activity in the San Francisco Bay has been unusually high.