Orca or Killer Whale * Moordvis * Orcinus Orca

Dolphin Walvis Dolfyn
Orcas are apex predators and they have no natural predators. Because they hunt in packs like wolf packs, they are frequently referred to as "wolves of the sea."

It is the largest living member of the dolphin family. Orcas can be found in all the world's oceans, from the Arctic to the Antarctic regions, including tropical seas.

Although different populations of orcas frequently specialize in particular kinds of prey, orcas have a varied diet. Some dolphin species just consume fish, while others hunt seals and other dolphin species. Baleen whale calves and even adults have been known to be attacked by them.

Off the south coast of Western Australia, orcas were observed killing blue whales on three consecutive occasions in 2019. One of these whales was believed to be between 59 and 72 feet (18 to 22 meters) long.

Humans are not believed to be in danger from wild orcas, and no fatal attacks have ever been recorded. At marine theme parks, there have been instances where captive orcas have killed or injured their handlers.

Three humans died at the hands of the bull orca Tilikum between 1991 and 2010, and he was depicted in the highly regarded 2013 movie Blackfish. Tilikum lived at SeaWorld from 1992 until his death in 2017.
Lolita, at the Miami Seaquarium, is one of the oldest whales in captivity.

In March 2016, SeaWorld announced that they would be ending their orca breeding program and their theatrical shows. As of 2020, theatrical shows featuring orcas are still ongoing, however.

Males are often longer than 6 metres (20 feet) and heavier than 6 tonnes (5.9 long tons; 6.6 short tons). 

Like other dolphin family members, they possess extremely advanced echolocation skills, identifying the location and features of prey and other objects in the water by using clicks and listening for echoes.

Though estimates of the world's population are varied, a 2006 consensus points to a minimum population of 50,000 Orcas. In the wild females usually can live up to 70 - 80 years while males can live up to 50 - 60 years. 
(*) https://en.wikipedia.org/wiki/Orca
(*) https://www.inaturalist.org/taxa/41521-Orcinus-orca
(*) https://animalia.bio/killer-whale