firstly, shark attack humans cause our actions and splashing
cause their triggers to react. We do resembles seals or sea lions.
And very often, once bitten, they will know that we are not their
prey and will let humans go.
However, due to blood loss, we often don't survive. I hope that
this does not encourage more killings of sharks. rem, it is a food
chain, and losing one of the top predators will have impact on
ecology.
secondly, for croc attack, they have the highest bite so when they
catch you, you won't escape. However, on animal planet, one time,
due to poor positioning, when they open slightly for a better grip,
prey got loose. it caught the animal on the head.. Now, from my
understanding, croc often drag their prey to their nest for the
carcass to rot as they prefer decomposed meat. Once I read that one
human who got caught, managed to catch his breath and escaped when
croc left him under a huge log to decompose.
However, as the place was near attack, he was lucky.
fyi.
