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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] In captivity, there have been several non-fatal and four fatal attacks on humans since the 1970s. [2]
Although resident orcas have never been observed to eat other marine mammals, they occasionally harass and kill porpoises and seals for no apparent reason. [105] Some dolphins recognize resident orcas as harmless and remain in the same area. [106] Orcas do consume seabirds but are more likely to kill and leave them uneaten.
Moby Doll did not eat for nearly two months after being captured. Initially, aquarium staff believed the orca would eat salmon and herring, but he did not eat the salmon that was cautiously let down into the dock on a line, with the idea of keeping the staff distant and safe from attack. [18]
A killer whale was spotted balancing a salmon on its head. It’s not clear what the behavior means, but orcas were observed doing the same thing in the 1980s.
The herring population is not completely depleted by orcas because they never eat the whole herring ball during the feeding phase of carousel feeding. [2] The herring that are not consumed are able to escape from the orcas. This means the orcas do not completely deplete their food source and potentially the strongest herring will survive the ...
Most sources conclude that the project to free Keiko was a failure because the orca failed to adapt to life in the wild. [21] In Norway, Keiko had little contact with other orcas and was not fishing; for months before his death, the orca was being fed daily. [22] [23] [15] A report in The Guardian describes the freed orca's life in Taknes Bay ...
The whales eat amphipod crustaceans like tiny shrimp and worms, which they consume by sucking up water and sediment from the seafloor, where such creatures live, then using their baleens to filter ...
Feeding turtles and tortoises right means mimicking their natural diet; the wrong foods, even common ones, can be harmful. Here are 32 foods to avoid.