Six orcas stranded together off the southern coast of New Zealand and all died. Local environmental authorities are investigating the causes of the stranding and speculate that it may be related to abnormal marine conditions and noise pollution. A research team will collect tissue samples to identify the underlying causes; preliminary suspicions point to marine…

A large number of southern right whale calves have died under unusual circumstances in the waters off Argentina’s Valdés Peninsula; as of mid-October, hundreds of calf deaths had been recorded. Research points to a combination of rising sea temperatures, bacterial infections, and marine pollution, with cetaceans continuing to face mounting pressures to survival.

According to a South African marine research assessment released on October 6, following the rerouting of the Red Sea shipping lane, a large number of ships are now passing through the Cape of Good Hope, increasing the risk of whale collisions with vessels fourfold. Several Bryde’s whales killed by propeller strikes have been found near…

The U.S. NOAA Fisheries confirmed that when a cruise ship arrived at the port of Sitka, Alaska, the body of an adult male fin whale was entangled in its bow, with the whale measuring nearly 18 meters in length and classified as an endangered species. Shipping traffic off the coast of Alaska is heavy, and…

A dead, stranded whale shark was discovered off the coast of Wakatobi National Park. The shark was approximately 9 meters long and weighed 5 metric tons. If the whale shark’s carcass remains on the shore, the decomposition process will release large amounts of organic matter and microorganisms, polluting coastal waters and beaches and posing risks…

A massive stranding of pilot whales occurred on a beach near the Arthur River on the West Coast. Approximately 140 pilot whales were stranded at the scene, with more than 80 already dead. Due to the receding tide, the surviving whales were exposed on the mudflats for an extended period, and their vital signs continued…

The toxic red tide off the coast of Monterey and Santa Cruz in central California has not subsided. The algae produce chondroic acid neurotoxins, which are transferred through prey species such as sardines and anchovies into the bodies of marine mammals. This area serves as a migration and foraging corridor for gray whales and humpback…

Microplastics were detected in fecal samples from an endangered Southern Resident orca in the waters off the west coast of Vancouver Island. This area has long been a site where marine debris—such as discarded fishing nets and plastic bags—accumulates year-round. The salmon that orcas prey on have accumulated microplastics in their bodies, and these pollutants…

An Iberian orca recently observed off the coast of Cádiz was found to have multiple penetrating wounds on its dorsal fin, consistent with shotgun shot patterns. The Iberian orca is a critically endangered species worldwide, with only about 30 individuals remaining in the entire population, making its survival extremely precarious. In addition to direct human-caused…

An adult female bigeye shark, which can grow up to 14 feet (4.2 meters) in length, was found stranded and dead on the coast of the Outer Banks in North Carolina. Personnel arrived at the scene to dispose of the carcass and collect biological samples. Subsequent necropsy results revealed lacerations on the shark’s tail and…