The 18 Scariest Sea Creatures

Teeth, venom, tentacles and things that glow in the dark: every entry here has given somebody a reason to stay out of the water.

1. 1
   Box Jellyfish

   A nearly invisible Australian jellyfish whose venom can stop a human heart in minutes.
   1000pts
2. 2
   Reef Stonefish

   The world's most venomous fish, perfectly camouflaged as a rock on the seabed.
   930pts
3. 3
   Giant Moray

   A massive reef eel that lurks in crevices and has a second set of jaws in its throat.
   930pts
4. 4
   Portuguese Man o' War

   A floating colony with tentacles up to 30 metres long that deliver agonising stings.
   734pts
5. 5
   Bull Shark

   An aggressive shark that swims into rivers and shallow water close to people.
   734pts
6. 6
   Great White Shark

   The predator behind most fears of the open water, with rows of serrated teeth and a habit of attacking from below.
   734pts
7. 7
   Orca

   The killer whale, which hunts seals, whales and even great white sharks in coordinated pods.
   734pts
8. 8
   Saltwater Crocodile

   The largest living reptile, an ambush hunter that roams coasts and open sea.
   636pts
9. 9
   Sloane's Viperfish

   A deep-sea fish with fangs so long they don't fit inside its mouth.
   636pts
10. 10
    Leopard Seal

    Antarctica's reptile-headed seal that ambushes penguins at the ice edge.
    636pts
11. 11
    Frilled Shark

    An eel-like living fossil with 300 needle-sharp teeth.
    520pts
12. 12
    Giant Squid

    A deep-sea giant with eyes the size of dinner plates and toothed suckers.
    520pts
13. 13
    Blue-Ringed Octopus

    A golf-ball-sized octopus that flashes blue rings and carries enough venom to kill an adult.
    520pts
14. 14
    Anglerfish

    The deep-sea fish that lures prey toward its fanged mouth with a glowing rod on its head.
    382pts
15. 15
    Humboldt Squid

    The red devil of the eastern Pacific, a fast, aggressive squid that hunts in packs.
    382pts
16. 16
    Tiger Shark

    A striped shark nicknamed the garbage can of the sea for eating almost anything.
    382pts
17. 17
    Goblin Shark

    A pink deep-sea shark whose jaws shoot forward to snatch prey.
    382pts
18. 18
    Great Barracuda

    A torpedo-shaped predator with a jutting jaw full of fang-like teeth.
    0pts

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