Taking the "black people can't swim" stereotype to a whole new level. In your world, Lucas, apparently black people are dismembered when they enter water only to float down to the lowest depths of the ocean only to have their heads melted by sea-floor volcanoes and their torsos torn to shreds by the one shark that will ever manage to survive at that depth. Stop making up biological facts just to help your stereotyping you racist fuck.
-Kilian Korth