Click on this link to see more amazing photos of diver Marco Queral meeting a 15 metre female humpback whale in Hawaii.
Marco Queral said ‘Their enormous size itself must be considered as an immediate life-threatening danger. I must be very cautious when they approach and investigate me. I believe they are gentle by nature but I am always aware their kind greeting of a tail swing may easily kill me by accident. Also, they are usually more shy and cautious toward humans and boats than dolphins are, perhaps because they are not so accustomed to seeing humans offshore. I think their bashfulness and timidity have been ingrained into their DNA as they have been chased and hunted by humans for centuries.’