Evolutions Episode 1 The Walking Whale
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@porrsmurfen Actually, there is no proof whatsoever that the great white is related to Megalodon, quite the opposite that's what scientists used to believe, but they've now concluded that the great white shared an ancestor with the modern Mako shark. Great Whites and Megalodon are most likely distant cousins, but they're at best no more closely related than humans are to gorillas.
Also, I did provide evidence that Megalodon lived in tropical waters, but you seem to have missed that.
porrsmurfen 1 month ago
@porrsmurfen that's absolute rubbish!
megalodon is a direct relative of the great white, which is warm blooded, as are all members of the lamnidae family, it only died out 30,million years ago and therefore had to be warmblooded, also there's no reason to think they lived in tropical waters or any evidence to support that idea! also great whites live in tropical waters, which below 100 feet from the surface is as cold as anywhere else in the world!
IAMTHESHITEHAWK 1 month ago
@IAMTHESHITEHAWK Noone said anything about other sharks, they just stated that Megalodon must have been coldblooded because fossils of it have been found exclusively in the tropical parts of the globe (or areas that used to lie near the tropics).
Historically climate change has always been a buffer against size in animals, and seeing as Megalodon lived in warm waters only, it would be safe to assume that a global cooling like the one described is likely the cause of its extinction.
porrsmurfen 1 month ago
err.... sharks are not all coldblooded, in fact the lamnids (the group with great whites, salmon sharks, mako, thresher, basking sharks, porbeagle etc...) are all fully warm blooded, and if the meg is an ancestor of the great white then it too would have been warmblooded. for a fish to be fully coldblooded it would have to live in very warm seas and only on the surface, which is less than 1% of them.
IAMTHESHITEHAWK 1 month ago in playlist sharks etc
I've watched his before but I'm still in awe how the harmless krill-eating whales used to be land walking carnivores.
Silpymon 2 months ago