There are few wildlife experiences on Earth that compare to seeing a blue whale in the wild.
As the largest animal ever known to have lived on our planet, blue whales can reach lengths of more than 100 feet and weigh as much as 200 tons. Yet despite their immense size, they spend much of their lives far from shore, making sightings a rare and unforgettable experience.
That’s why we’re excited to report that San Diego’s 2026 blue whale season is already off to a promising start.
An Early Start to the Season
On April 28, 2026, we recorded our first blue whale sighting of the year—earlier than we typically expect to see them in our local waters. Early arrivals are often a positive sign, and so far, the season has continued to build momentum.
As of today, we have confirmed 16 blue whale sightings aboard our whale watching trips.
While it’s still early in the season, those numbers are especially encouraging when compared to last year. In 2025, we recorded only 38 blue whale sightings during the entire season, making it one of the slowest years we’ve experienced in recent memory.
What Happened Last Year?
While no one can say with certainty why blue whale sightings were lower in 2025, many marine scientists and researchers have discussed several possible contributing factors.
One theory points to the significant runoff that entered Southern California waters following the Malibu fires. That runoff coincided with a major toxic algae bloom that impacted marine ecosystems throughout the region.
Events like these serve as a powerful reminder that what happens on land doesn’t stay on land. Stormwater runoff, pollution, and environmental disturbances can have far-reaching effects on ocean health, influencing everything from water quality to the distribution of the marine life that depends on these ecosystems.
Blue whales rely on enormous concentrations of krill for food. When ocean conditions change, the entire food web can be affected, influencing where whales choose to feed and travel.
One of the Rarest Wildlife Experiences on Earth
Despite being the largest animals on the planet, blue whales remain surprisingly elusive.
It’s estimated that only about 1% of people on Earth have ever seen a blue whale in the wild. For most people, these incredible animals exist only in documentaries, books, and photographs.
Seeing one surface next to the boat is a humbling experience that puts the true scale of these giants into perspective. The sight of a blue whale’s massive back gliding through the water—or watching its towering blow rise above the horizon—is something that stays with you forever.
For many of our passengers, spotting a blue whale becomes a once-in-a-lifetime memory.
Looking Ahead
While there’s still plenty of season left to go, we’re encouraged by what we’ve seen so far. An early first sighting and 16 confirmed encounters already have us optimistic that 2026 could be a much stronger year for blue whale watching in San Diego.
If you’ve ever dreamed of seeing the largest animal on Earth, now is the time to start planning your adventure.
We can’t predict exactly what the season will bring, but all signs are pointing toward an exciting summer ahead—and we can’t wait to see what the next few months have in store.
Join us on the water and experience blue whale season for yourself. With sightings already surpassing expectations, we’re hopeful that 2026 will be one of the best blue whale seasons we’ve seen in years.
