A sixth beluga whale rescued from Canada has died at SeaWorld San Diego.
The belugas were in danger of being euthanized if they weren't rescued.
The whale struck the boat in the New York, New Jersey port area on Saturday afternoon.
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.