No one would swim in the oceans.
There are so many creatures in the ocean that can cause excruciating pain and death just by touching them, things that camouflage themselves and are only seen when it's too late. People still swim in the oceans with that, and I think that's far scarier.
It would be yet another reason to never go in the sea ._.
A shark that big could totally swallow you without mangling your body. I am down.
lolYou should probably be more afraid of contamination than sharks.