Ocean Creature World Records: Biggest, Deepest, Fastest

Largest animal: Blue whale at 30 m, 180 tonnes. Deepest-diving mammal: Cuviers beaked whale at 2,992 m. Deepest-diving fish: Mariana snailfish at 8,178 m.

Fastest fish: Sailfish at 110 km/h. Most venomous: Box jellyfish, cone snail, blue-ringed octopus. Oldest: Greenland shark at 400+ years.

Longest pregnancy: Frilled shark at 3.5 years. Largest eyes: Colossal squid at 27 cm across. Largest brain: Sperm whale at 7.8 kg. Most eggs: Ocean sunfish at 300 million. Immortal: Turritopsis dohrnii jellyfish. The ocean holds more extreme records than land..