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Orcas (or killer whales) are large, powerful aquatic apex predators. There have been incidents where orcas were perceived to attack humans in the wild, but such attacks are less common than those by captive orcas. [ 1 ]
Orcas have helped humans hunting other whales. [221] One well-known example was the orcas of Eden, Australia , including the male known as Old Tom . Whalers more often considered them a nuisance, however, as orcas would gather to scavenge meat from the whalers' catch. [ 221 ]
The whales make groans, pops and belches typically at frequencies around 500 Hz. The purpose of the sounds is not known but may be a form of communication between whales within the same group. Northern right whales responded to sounds similar to police sirens—sounds of much higher frequency than their own. On hearing the sounds, they moved ...
Researchers have warned that human impact on the ocean is putting increasing pressure on dolphins and whales, and their ecosystems. The UK whale and dolphin conservation charity Orca recorded ...
Bryde's whales have not been reported as taken or injured in fishing operations. They are sometimes killed or injured by ship strikes. Anthropogenic noise is an increasing concern for all rorquals, which communicate by low-frequency sounds. [8] These whales are protected off the US by the Marine Mammal Protection Act of 1972. [8]
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).
The gray whale (Eschrichtius robustus), [1] also known as the grey whale, [5] is a baleen whale that migrates between feeding and breeding grounds yearly. It reaches a length of 14.9 meters (49 ft), a weight of up to 41 tonnes (90,000 lb) and lives between 55 and 70 years, although one female was estimated to be 75–80 years of age.
But for people on the street, vehicles haven’t been this dangerous in over a generation. This is the most dangerous time to be a pedestrian in over 40 years. These charts explain why.