The ocean sunfish is a fish whose body comes to an end just behind the dorsal and anal fins, giving it a 'half-fish' appearance. Sunfishes are also the largest of the ray-finned bony fishes, who can measure up to 15 ft (4.6 m) in length and 2,000 kg (4,400 lb) in weight.
This rare footage of a gigantic sunfish was captured on film by photographer Miguel Pereira off the coast of Portugal. The huge creature dwarfs the divers as it swims past. The slow-moving fish and clear water allow for some spectacular close-ups of this amazing animal.