Monterey Bay is seeing a sharp surge in humpback whales this season, drawing large numbers of marine mammals into the area alongside thousands of dolphins. Local experts attribute the influx to ideal currents, sunlight, and a massive supply of anchovies.
Abundant Anchovies and Favorable Currents Drive Whale Surge
Large gatherings of humpback whales currently fill Monterey Bay, offering peak conditions for whale watching along the coast. Nancy Black, owner of Monterey Bay Whale Watch, points directly to the food chain as the primary catalyst for the movement.
That’s because there’s lot anchovies, all these tons and tons of fish that have moved in so besides the Humpbacks there’s more than 50 to 100 humpbacks in the bay and also several thousand dolphins,
Black said.
Biologists explain that seasonal weather patterns also drive the accumulation of marine life. Sunlight fuels plankton growth toward the end of the summer season, which in turn feeds the schooling anchovies.

We’ve had the summer season, the sun fuels the plankton and when you get towards the end of the season anchovies are feeding on the planktons, it’s been really good currents, so it’s a combination of the currents, the direction of the coast and the sunlight,
Black said.
Population Recovery Faces Ongoing Ocean Hazards
Decades after commercial whaling nearly wiped out the regional population, humpbacks have rebounded significantly along the coast. Current estimates place the local count at over 5,000 individuals.
Commercial hunting heavily depleted Monterey Bay populations prior to the 1970s. Despite federal protections that allowed the species to recover, modern marine traffic introduces new daily hazards.
Experts emphasize that whales now contend regularly with underwater noise pollution, commercial ship strikes, and dangerous gear entanglements. Operators on the water urge visitors and boaters to maintain high levels of situational awareness.
Keep your eye out for whales that are ahead of you so you don’t bump into them but always be looking because a whale can pop up anywhere,
Black said.
Frequently Asked Questions About Monterey Bay Whales
Why are so many humpback whales in Monterey Bay right now?
The influx is driven by massive schools of anchovies feeding on plankton, supported by strong seasonal currents and coastal sunlight patterns.
How many humpback whales are currently estimated along the coast?
Local experts estimate that the regional population has recovered to over 5,000 humpback whales following decades of protection from commercial hunting.
What are the primary threats facing recovered humpback whales today?
Biologists note that whales frequently encounter noise pollution, vessel strikes, and ocean gear entanglements while traveling through coastal waters.
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