Thermal cameras mounted on Angel Island are now scanning the San Francisco Bay with artificial intelligence at their core, searching not for vessels or weather systems, but for the faint heat signatures of whale breath rising through some of the world's busiest shipping lanes. Researchers from UC Santa Barbara's Benioff Ocean Science Laboratory have deployed this cutting-edge collision prevention system at a moment of genuine crisis: gray whales, once a conservation triumph, are dying at alarming rates as they make desperate detours into the Bay searching for food that has vanished from their Arctic feeding grounds.
Half of all Eastern North Pacific gray whales have died in the past ten years—a staggering loss driven by climate change shrinking Arctic sea ice and decimating the food chains these animals depend on. Hungry and exhausted, the whales are abandoning their traditional 12,000-mile annual migration route between Alaska and Mexico to venture into San Francisco Bay, where they face an entirely different danger: ship strikes. Last year alone, twenty-one gray whales died in the Bay from vessel collisions. Already this year, seven have been found dead.
The new system, developed by UC Santa Barbara in collaboration with the U.S. Coast Guard's Vessel Traffic Service and The Marine Mammal Center, uses thermal imaging cameras to detect the heat signature of whale breath—their distinctive "blows"—from up to four nautical miles away. These cameras work around the clock, paired with artificial intelligence technology from WhaleSpotter, a marine mammal detection company. Each detection is verified by a credentialed marine mammal specialist before alerts are sent to mariners. Once confirmed, the whale locations appear on Whale Safe, an online tracker developed by BOSL scientists that shares real-time sightings with Bay mariners and the Coast Guard's Vessel Traffic Service, allowing ships to reroute or reduce speed.
The first thermal detection camera was installed on a U.S. Coast Guard communication station on Angel Island, positioned to monitor a critical hotspot where gray whales and cargo ships, tankers, ferries, and fishing vessels converge. A second system will soon be deployed aboard the MV Lyra, a passenger ferry operated by San Francisco Bay Ferry—a public agency that carries three million passengers annually between Vallejo and downtown San Francisco. This vessel-based monitoring represents a particularly innovative approach, turning the ferry itself into a mobile detection platform.
"It is heartbreaking to see these starving whales stumbling around in the middle of the hustle and bustle of San Francisco Bay," said Douglas McCauley, director of BOSL. "Every day is a nailbiter. But what gives me hope is seeing how all the right partners in the Bay Area community have come together to do something. This new system will save whales' lives."
Rachel Rhodes, the BOSL scientist leading the project, echoed that urgency. "Last year was one of the deadliest on record for gray whales in the bay, with twenty-one dead and seven more have already died this year," she said. "The whale and mariner communities have been racing to get ahead of this, building new tools and partnerships we didn't have a year ago."
The system represents far more than incremental progress—it's a lifeline for whales caught between climate catastrophe and modern maritime traffic. By turning thermal imaging and artificial intelligence toward whale conservation, the Bay Area has created a model for how communities can respond swiftly when wildlife faces sudden, severe threats. The cameras are now live, watching, and alerting. For gray whales struggling to survive in warming oceans, those thermal signatures might mean the difference between life and death.