What is the biggest fish in the world may it be fresh or salt water?
Whale Sharks: Harmless Heavyweights As fearsome as this guy looks, he actually wouldn’t harm a hair on your head. Whale sharks may have big mouths, but it isn’t for swallowing people – they’re plankton feeders. Plankton are microscopically tiny organisms that thrive in the oceans throughout the world. You may not see them in the picture, but he knows they’re there. The huge, gaping mouth is the whale shark’s adaptation to feeding on plankton; the wider his mouth opens the more plankton he can scoop up with each “bite”. All the water that he takes in to scoop up his meal is simply passed out of his body through his gills, which have sieve-like membranes covering them to filter out the little critters and prevent them from escaping. If you were accidentally scooped up by the whale shark you would find yourself being spit back out through an interesting process called gastric eversion. The whale shark actually turns its stomach inside out and spits it out through its mouth, ejecting the e
