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The report concluded that global warming of 2 °C (3.6 °F) over the preindustrial levels would threaten an estimated 5% of all the Earth's species with extinction even in the absence of the other four factors, while if the warming reached 4.3 °C (7.7 °F), 16% of the Earth's species would be threatened with extinction.
A 2018 study published in Science found that global orca populations are poised to dramatically decline due such toxic pollution. [ 162 ] [ 163 ] In the Pacific Northwest , wild salmon stocks, a main resident food source, have declined dramatically in recent years. [ 3 ]
The event detailed in the study took place on June 18, 2023, 800 meters (875 yards) offshore close to Seal Island near Mossel Bay — about 400 kilometers (250 miles) east of Cape Town — where ...
In the process of warming up, the planet saw several "cold snaps" and "warm snaps", such as the Older Dryas and the Holocene climatic optimum, as well as heavier precipitation. In addition, the Pleistocene megafauna became extinct due to environmental and evolutionary pressures from the changing climate.
Orcas in the Gulf of California appear to have gained special skills to hunt and kill the world’s largest fish, according to a new study.. Whale sharks, which grow up to 18m long, are known to ...
The researchers’ analysis revealed exactly how the killer whales, often hunting as a group, subdue the whale shark. First, the orcas use their bodies to hit a whale shark at high speed.
Aggression among captive orcas is common. They attack each other and their trainers as well. In 2013, SeaWorld's treatment of orcas in captivity was the basis of the movie Blackfish, which documents the history of Tilikum, an orca at SeaWorld Orlando, who had been involved in the deaths of three people. [121]
False killer whales are large marine predators. They are the fourth-largest extant species of oceanic dolphin, exceeded in size only by the orca, and the two species of pilot whales. Females reach a maximum size of 5 m (16 ft) in length and 1,200 kg (2,600 lb) in weight, and males 6 m (20 ft) long and 2,300 kg (5,100 lb).