WhaleSpotter AI scans SF Bay to protect gray whales from ships
Get the Energy newsletter
Daily energy & climate — solar, EVs, oil, the policy fights and tech bets shaping the transition. Free.
- WhaleSpotter, an AI detection network launched this week, scans San Francisco Bay 24/7 for whale blows and heat signatures up to 2 nautical miles away, automatically flagging sightings that human observers then verify and relay via radio to ferry operators and vessel traffic controllers
- Gray whale deaths in the Bay Area hit 21 last year — the highest in 25 years, with at least 40% killed by ship strikes; at least 10 more gray whales have already died in the area so far in 2025
- The San Francisco Bay network is the first to directly integrate land-based and vessel-mounted AI detections with official mariner alerts, per the Benioff Ocean Science Laboratory, which led the initiative
- The gray whale population has dropped by half over the last decade to roughly 13,000, with scientists increasingly linking their shift into the bay — lingering for days or weeks — to climate-driven disruption of Arctic feeding grounds
- California approved commercial use of ropeless pop-up crab fishing gear for the first time this spring, letting fishermen trigger an acoustic release to retrieve gear from the seafloor instead of leaving tens of thousands of vertical lines on the surface
- Thirty-six whales were confirmed entangled off the west coast in 2024 — the highest since 2018 — as a marine heatwave pushes humpback whales closer to shore where the Dungeness crab fishery operates
Why it matters: For San Francisco Bay ferries, cargo ships, and crab fishermen, the WhaleSpotter data is forcing real-time operational changes — slower speeds, rerouted lanes, and ropeless gear — as climate change drives whales into the same waters humans work in. With 21 gray whales dead in 2024 and 36 entanglements logged that same year, the Bay's AI-plus-alerts model is the first replicable system that turns constant monitoring into vessel action, not just data collection.
