Orca the queen of dolphins
Orca is classified Data Deficient by the IUCN. Follow the link below to understand what is meaning. Anyway is not in extinction risk generally but only locally.
Scientific Name: Orcinus orca
English name: Killer Whale or Orca
Link to Red List page: Orca or Killer whale red list
Orca lives around coasts but even in open oceans, she can go down to a thousand meters of depth and she can stay up to 20 minutes without breath.
Male can be 10 mt long and female can be 8.5 mt long, Male can weight 10 t and female can weight 7.5 t. Can live between 35 to 50 years.
Where to find:
Is in all oceans around the world
Killer Whale or Orca, is a dolphin, the biggest dolphin on the earth. She’s a predator and she loves hunts seals. Or sea lions in open water and dolphins, porpoises, belugas, but even small fish like salmon or herring.
Orca is a social animal and lives in large groups of 40/45 specimens, the boss is an adult male.
When the melting season arrives male and female copulate and after 12-15 months will birth a cub. He will be 2/2.5 mt long and weight 180 kg.
But not all orcas are the same. A large study said that orcas are distributed almost everywhere in the oceans. But not all nomads, so the orcas of Alaska are different in behavior from the orcas of Antartica.
The main difference is the animals hunting. Because any environment has his different fauna and different is even the technique used. Generally, we can say the orca’s hunt with strategy group. Many elements they join in the hunt and constrict the prey to be isolated and so they kill the prey. There are different groups of orcas but are not subspecies.
According to the scientists, these groups are ecotypes. Another difference is the communication. Any ecotype has developed different sounds like to underline the difference from other ecotypes. So someone thinks this happens in the species evolution. Without interaction, they find their food without competition, this process is started millions of years ago.
Major risk depends on the location, but the pollution is a big risk. The boats noise even is a big issue, orcas use the sounds like a sonar to recognize the prey. Hence the increase of background noise disturbs the localization.
Even this beautiful animal is not lucky, it was hunted a lot for to show in sea parks and aquarium. Maybe you remember we told about this problem in the post Killer Whale and Water Parks.
Finally, I invite you to read that post because is necessary to understand what is behind the sea parks business and the future of the Killer Whale.
An example of project orca