Until now, whales could easily go unnoticed by mariners, but an AI-powered detection network launched this week is designed to track them day and night. 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. They'll be able to make adjustments way before they get anywhere close, said Thomas Hall, director of operations for the San Francisco Bay ferry.