The Sea of Cortez, often referred to as one of the most biologically diverse seas on Earth, is home to a remarkable variety of marine life — including the majestic fin whale. Known as the “greyhounds of the sea” for their speed and grace, fin whales are among the most impressive visitors to Baja’s waters. Here are 10 fascinating facts about these incredible giants.
Fin whales rank just behind the blue whale in size. They can grow up to 85 feet (26 meters) long and weigh around 80 tons, making their presence in the Sea of Cortez an awe-inspiring sight.
While many fin whales migrate seasonally, some populations in the Sea of Cortez are year-round residents, taking advantage of the region’s abundant food supply and warm waters.
Nicknamed the “greyhound of the sea,” fin whales can reach speeds of up to 25 miles per hour (40 km/h) — remarkably fast for such a large creature. This speed helps them travel great distances and avoid predators.
Fin whales are easily recognizable by their asymmetrical coloration — their lower right jaw is white, while the left side remains dark. Scientists believe this may play a role in hunting or communication.
Like other baleen whales, fin whales feed by gulping large amounts of water and filtering out krill, small fish, and plankton through their baleen plates. They can consume up to 2 tons of food per day during peak feeding season.
Fin whales dive to depths of up to 700 feet (200 meters) and can stay submerged for 15 to 20 minutes. These dives often occur during feeding, where they chase schools of fish below the surface.
Fin whales produce low-frequency calls that can travel hundreds of miles underwater. These deep, resonant sounds are believed to be part of long-distance communication and possibly courtship.
In the winter and spring months, the calm waters off La Paz and Espíritu Santo Island are some of the best places to spot fin whales surfacing gracefully alongside other species like blue and humpback whales.
Fin whales were heavily hunted during the 20th century for their oil and baleen. Although now protected, they remain listed as vulnerable, with populations slowly recovering thanks to conservation efforts and responsible ecotourism.
Spotting a fin whale up close is an unforgettable experience — their sheer size, speed, and elegance leave lasting impressions on all who witness them. Tours like those offered by Baja Charters in La Paz give visitors the chance to encounter these magnificent whales in a respectful, eco-friendly way.
The fin whale is a living testament to the wonders of the Sea of Cortez — powerful yet peaceful, massive yet graceful. With Baja Charters, you can experience these incredible giants in their natural habitat while enjoying a fun and educational marine adventure. It’s an unforgettable way to connect with the ocean and witness the magic of Baja’s wild beauty.
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