Piranna
The most dangerous deep sea creature is the Sea Wasp. A deadly jellyfish. The slightest touch of their tentacles creates a permanent rash and horrible pain. Any harder and your toast.
The dangerous sea creature is the blue-ringed Octupus.
It is a mythical creature, so no, it is not dangerous in real life.
sharks
tiger shark
Elasmosaurus; it has a long neck and is 14 meters in length. Ichthyosaurus; is small and very fast. Mosasaur; is a small snake like creature that has rows of sharp teeth. Theres more just look up most dangerous sea animals! -N.C.
most do but some maynot
KOMODO dragon
A dorado
certain species of sea snake
dolphins
single unicellular creature