Shamato sayama back in August 2024 study on megalodon being as fast as modern day great white and orca rather than previous work did by shimada 2023 suggest a slow swimmer....This kinda fuels down the new study did by sternes etal.....

This would suggest that the body shape proposed by shimada is in question...Honestly if this is considered, I think it built like a giant mako unlike a overbulk gws proposed by cooperetal or a mutant tiger shark proposed by sternes etal considering although megalodon speed is similar to gws , for practical purposes, its a bit faster than gws by having a hunting speed of 5.9m/s[~6] where gws get 5.7m/s....