From early winter until late spring the whale sharks can be found feeding in the rich waters of the Sea of Cortez. The gentle giants of the sea are the largest fish in the world and each season return to the waters close to the city of La Paz. Seeing these ocean behemoths in their natural environment or swimming close to these fish can be an exciting outing for young and old. Whale sharks are the largest known species of fish, growing to 12.5 meters and can weigh as much as 79,000 pounds. The whale sharks here in La Paz are often 7-10 meters in length. The fish can live as much as 70 years. Whale sharks have very large mouths, they feed mainly, though not exclusively, on plankton, microscopic plants and animals, and occasionally on small fish
The Sea Lions of Los IslotesHere, ochre rocks striped white with guano are home to melon-headed sea lion bulls who spend their days posturing and preening for the females. The bark of petulant males challenging another announces your arrival at the island long before you drop anchor. The lower sections of the islands are indiscernible beneath a carpet of sea lions basking in various states of repose, piled on top of one another with no apparent regard for personal space. The azure waters are alive with pups playing in the swell.
The migration brings Humpback Whales back into the Sea of Cortez area beginning in the middle of November. Typically we see adult Humpback Whales transiting through the area from mid November until early December. By mid December the population of Humpback Whales is nearing its peak and the activity level overall is high. This continues until late January with adult Humpback Whales dominating. In late December and into January we start to see new born baby Humpback Whales. By early February the baby Humpback Whales start to become more active and their energy and activity level dominates until the end of the season in April. The blue whale is the largest animal to ever live on this earth and can grow to over ninety feet in length. They are also the loudest, a screaming blue whale can be heard for several miles underwater. Blue whales can be found in the Sea of Cortez during the winter months when the water is cool. Other whale species that frequent the Sea of Cortez include the Sperm Whale, Minke Whale, Fin Whale, and more.