@padi: Do you know why whale sharks open and close their mouths? They're like vacuum cleaners, and can actually suck in plankton-rich ocean water. When their mouths close, they expel the water through a large set of gills that act like strainers - filtering out the water while keeping solid organisms smaller than about 2 centimeters in diameter 🦐 🎥 IG 'timmboslice_' #whaleshark #marinelife #filterfeeding