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Old 03-08-2019, 04:32 AM
 
11,441 posts, read 4,684,794 times
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I saw this and am sharing. Rumors of these whales have been around and told by fishermen off the coast of Chile but scientists have finally seen them and are now performing DNA tests. They obviously look different. They are slightly smaller, different shaped head and dorsal fin and most noticeably have a very small eye patch.
No confirmation yet they are a separate species but it's looking that way.

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Old 03-08-2019, 05:44 AM
 
Location: Omaha, Nebraska
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I’m not surprised. There’s been quite a bit of speculation that “regular” killer whales are more than one species which we’ve lumped together based on their similar appearance. This visually different type is just more proof that we have a lot left to learn about orcas!
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Old 03-11-2019, 03:45 AM
 
Location: The Driftless Area, WI
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Another new species!--obviously proof of Creationism.


We seem to be finding new ones faster than we're losing old ones. So much for The Sixth Extinction.


Now that we have the ability to genotype, we're finding we have made many mistakes in lumping or separating taxonomic groups based on traditional morphologic criteria.....I've always wondered if anthropologist in the distant future will be calling today's Pigmies and Watusis different species based on skeletal fossils?
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Old 03-12-2019, 09:04 PM
 
Location: British Columbia 🍁
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We actually know quite a bit about orcas and their differences:


https://www.fisheries.noaa.gov/species/killer-whale


"....... There are three main types of killer whales: Resident, Transient, and Offshore. Each ecotype differs in appearance, diet, habitat, genetics, and behavior. While all three types share at least part of their habitats, they are not known to interbreed with each other....."


I'm thinking this new pod that's been spotted is a home ranging South American Resident group rather like North America's Pacific North West Resident group that makes its home range between California and Alaska. They look very different from the Transients and the Offshores.


There's more information about the differences at the above link.


.
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Old 03-13-2019, 12:51 AM
 
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I read that these killer whales feed on fish, not marine mammals.
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Old 03-13-2019, 02:40 AM
 
Location: colorado springs, CO
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I think thatís so interesting! I wonder how long the fishermen have been seeing them? We donít know squat yet about this world; so much left to learn.
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Old 03-17-2019, 07:02 PM
 
Location: Eugene, Oregon
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Some of the different populations of orcas feed on fish and some on marine mammals. But is this a culturally developed behavior or is it genetic? It might begin as a cultural adaptation and eventually lead to differences that are found in their DNA. Separating the two elements is often difficult and factions in science may waiver back and forth, with no final conclusion ever coming that everyone accepts.
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Old 03-19-2019, 01:28 AM
 
Location: British Columbia 🍁
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Resident orcas only feed on local fish, the northern hemisphere residents specialize in salmon because of the high oil content of salmon. If this newly found pod of South American orcas feed on fish then that may back up my guess that they would likely be resident orcas.

Offshore orcas are very deep divers who feed on sharks, sharks also having a very high oil content.

Transient orcas are where the misnomer "killer whale" comes from (orcas are actually the largest of dolphins, they aren't whales). Transient orcas feed on sea mammals - seals, sea lions, porpoises, dolphins, small species of whales. They will also prey on the calves or juveniles of larger species such as grey whales and humpback whales for the youngsters' tongues only.

.

Last edited by Zoisite; 03-19-2019 at 01:39 AM..
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Old 03-19-2019, 06:03 PM
 
Location: Eugene, Oregon
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In the area around Southern Alaska, the orcas have been preying more heavily in recent years on sea otters, due to a reduction in seal populations.
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Old 03-19-2019, 06:59 PM
 
Location: NW Nevada
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Quote:
Originally Posted by coschristi View Post
I think thatís so interesting! I wonder how long the fishermen have been seeing them? We donít know squat yet about this world; so much left to learn.

Ohhhh what mysteries the oceans hold we haven't even scratched. They have only just recently proved the existence of the giant squid. What else is in the depths? Our imaginations can't even cover it methinks. It's tons of fun to speculate though.
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