Blue whales, the largest animals on earth, have been spotted in California waters at levels not seen since the whaling industry decimated their population in the early 1900s. According to researchers, the endangered species is making a remarkable comeback in the Eastern North Pacific.

Scientists from the Marine Mammal Institute at Oregon State University have been monitoring blue whale populations off the coast of California since 1991. In recent years, they have observed a significant increase in the number of blue whales returning to the region.

This is a promising sign for the species, which was hunted to near extinction by commercial whaling in the 20th century. Blue whales were once abundant in the Eastern North Pacific, with an estimated population of around 2,000 individuals. However, by the mid-1960s, that number had dropped to just a few hundred.

The recovery of blue whale populations in California is due in part to conservation efforts that have been put in place to protect the species. These efforts include regulations on commercial whaling, as well as measures to reduce ship strikes and entanglements in fishing gear.

The return of blue whales to California is a positive development not only for the species but also for the health of the ocean ecosystem. As apex predators, blue whales play a critical role in maintaining the balance of the marine food web. Their resurgence is a testament to the resilience of nature and the power of conservation efforts to make a difference.