California holds the healthiest blue whale population on Earth — an estimated 2,000-2,800 individuals feeding on massive krill blooms along the coast from June to October. Monterey Bay's underwater canyon brings whales within 30 minutes of shore, and boat trips from Monterey, Moss Landing, and Santa Cruz regularly encounter blue, humpback, and fin whales feeding together. Further south, the Channel Islands Marine Sanctuary off Santa Barbara is another prime hotspot, with Santa Barbara being one of the few places in the world where blue whales are visible from shore. Pair with elephant seals and sea otters for a full California wildlife itinerary.
