Orca (Killer Whale)
As more research is done, it is becoming increasingly apparent that there are various 'types' of Orcas and some suggest that these should be treated as different species, as they do not seem to mix and interbreed. This photo shows a Type B female and calf and one can see the reasonably large eye patch (which has a yellowish colouration) but just as important is the generally greyish cast to the animals which would be black in a Type A.
