Requiem " shark swimming in the warm seas and oceans of the world . Basking sharks have round eyes , young life and come to full development . This dangerous sharks very different sizes , as long as 69 cm adult adult 7.5 meters long , the length of the scale length as long as the great white shark from fully grown . As the fourth most dangerous sharks to humans, basking sharks have been recorded in a number of attacks on humans . Known unprovoked attack 39 people, seven people were killed