Oh right, in theory I knew that. Sorry. But have the non-pelagic shark species survived any climate changes that would force them to migrate across a large inh

Oh right, in theory I knew that. Sorry. But have the non-pelagic shark species survived any climate changes that would force them to migrate across a large inhospitable area? Sharks have survived very long as a group, but it's not clear to me that most/all of the individual species that have existed still do.