The one guy, Schwartz the shark biologist, says global warming is irrelevant, while the other guy, Burgess (no credentials mentioned) uses “plausible” to mean “impossible to disprove completely.”
I had a friend in high school who was bitten on her foot by a shark in Virginia Beach, around 1984. When my husband says, “Oh, it’s just a sand tiger ...,” I say, “Get out of the water, kids. Losing a foot would be a nuisance.”
That’s why I favor inground pools.