it wasn't just one. three large whale sharks. you were near annamaria island on the gulf coast. >> yeah, out of cortez, florida. >> sandra: what a scene. were people scared? you had vacationers that were on your boat. >> yeah. 12 passengers. the hardest thing is keeping people from jumping in there with them. they're so docile. >> sandra: and have you ever seen one of this size before? >> no. normal is 15, 20 feet. we saw the third one and she was massive. i'm in a 41 foot boat and at lease 35 feet. >> sandra: so many people dug in when they saw the images and thought wow, that is enormous.