Everything Orca!
100leaguesunderthesea:

Orca (Orcinus orca) portrait, Sea of Cortez, Baja California, Mexico by Hiroya Minakuchi

100leaguesunderthesea:

Orca (Orcinus orca) portrait, Sea of Cortez, Baja California, Mexico by Hiroya Minakuchi

fuckyeahkillerwhales:

Although both members of Delphinidae, there’s quite a size difference here!

fuckyeahkillerwhales:

Although both members of Delphinidae, there’s quite a size difference here!

edensflaw:

Orcinus orca
or
Orca
or
Killer Whale
Killer Whales are a toothed whale that can be found in the Antarctic and Arctic waters and also the warm waters of the tropics.
Their diet can consist of fish to other marine animals like seals, walruses, penguins, etc. It mostly depends on what region a pod is located.
Orcas are highly social creatures and each pod has its own unique dialect and set of vocabulary.
The most popular killer whale would be Shamoo. His dorsal fin is curved due captivity.
Yep, I watched a Nat Geo program about Killer Whales. They were my first favourite animal. I even have a kids’ book about a killer whale named Katie W. Whale. It’s super cute.

edensflaw:

Orcinus orca

or

Orca

or

Killer Whale

Killer Whales are a toothed whale that can be found in the Antarctic and Arctic waters and also the warm waters of the tropics.

Their diet can consist of fish to other marine animals like seals, walruses, penguins, etc. It mostly depends on what region a pod is located.

Orcas are highly social creatures and each pod has its own unique dialect and set of vocabulary.

The most popular killer whale would be Shamoo. His dorsal fin is curved due captivity.

Yep, I watched a Nat Geo program about Killer Whales. They were my first favourite animal. I even have a kids’ book about a killer whale named Katie W. Whale. It’s super cute.

Natural and Artifical Selection Questions

Pick one trait that your animal has and select that trait for 100 generations. Explain the following:  

1) What steps would you follow to undertake this selection process?
I would choose the white spot trait and try it making it bigger. What i would have to do is mate two orca whales with larger white spots together. By doing this they have a chance of having a off-spring with a larger white spot. You would continue breeding two whales with large white spots untill its is big as desired.

2) Why did you choose to select that trait?
Becuase  the orca’s coloring is its main survival adaptation. But the orca is mainly black. If the white spot was larger it could probably help the whale survive better. 

3) How long will it take to complete 100 generations?

Since they become sexually mature at around 13 years, it will take around 1300 years to complete 100 generations. [8]

4) Somehow indicate what your animal will look like when the 100 generations have been completed.

After 100 generations the orca whales  white spot would be a bit larger. Over the years the white spot will probaly grow larger and cover up more space. It would probally cover up most of the stomach of the orca whale. It may reach up to its sides as well. 

8. http://marinebio.org/species.asp?id=84

Zoo Habitat

Orca whales are sometimes put into captivity (zoo, marine park, etc). If this happens they put them in a large tank with either filled with fairly warm or cold water. It depend where the orcas were from. They basically should have a lot of room to swim around.

*NOTICE* Click image for larger image and link (URL).

Why Are They Endangered?

The orca whale is threatened by the loss of its habitat, and also by reduction in food supply in certain areas. The orca consumes a ton of food each day. The same food that fishermen catch for a living. When they cant find it they will move to find more.Because of moving they are able to get injured or get killed by the fishing nets further out of the coast. Half the calf’s don’t make it past their first year, because they starve to death. Some people will hunt the orca for the meat to eat. The orca is also killed for its fat, which is clear oil which is commonly used in fragrances, sprays, etc. [10]

10. http://orca.dolphins-world.com/

*NOTICE* Click image for larger image and link (URL)

Close Relatives

The orca whale is the only one that is in the Orcuinus genus. But, the orca whale are related to other dolphins, whales, and porpoises.

Bottlenose Dolphin (Tursiops truncatus)

The bottlenose dolphins (Tursiops truncatus) is closely related to the orca whale. The bottlenose dolphin usually lives in warmer waters. They are grey in color. Like all dolphins they have a blowhole to get and release oxygen. They normally eat squids, eels, shrimp, and fish. They use echolocation to find prey. They are very smart, they use mimicry, able to recognize things and living creatures. Sometimes they help fishermen by driving fish into their nets. They will eat the fish which had not went into the nets. Some dolphins are trained to find sea mines. In Japan the dolphins are hunted to be eaten. Sometimes they dolphin get into nets meant for tuna. [11]

Irrawaddy Dolphin (Orcaella brevirostris)

The Irrawaddy dolphin (Orcaella brevirostris)  is closely related to the orca, mostly gene wise. They are grey or dark slate blue; they have no pattern. The Irrawaddy dolphin lives in brackish waters near costs, mouths or rivers, and also in estuaries. They communicate by clicks, buzz, and creeks. The Irrawaddy has a a mutualistic relationship with us humans, especially with traditional fishers. the fishers give out a call for the Irrawaddy to drive fish into their nets. As a reward the fishers will give them some of their catch. They are being threatened by fishers further out of the coast. The fishers will let out their nets, most of the time the dolphin accidently drowns. They are also killed my blast fishing. Or they intentionally kill them for their oil.[12]

11. http://en.wikipedia.org/wiki/Common_Bottlenose_Dolphin
12. http://en.wikipedia.org/wiki/Irrawaddy_dolphin

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Habitat

The orca whale is able to live in any ocean, they are sometimes even found in fresh water rivers.[10] They have a broad niche. They are able to eat most marine animals; like fish, whales, sea lions, etc. They either have a permanent residence or a transience residence. By having a permanent residence they will live in one specific area, because of personal preferences. If they have a transience residence that means that they will not live in one area for long, they are always on the move.

10. http://orca.dolphins-world.com/

*NOTICE* Click image for larger image and link (URL)