7 DEADLIEST SEA ANIMALS

1. Box Jellyfish:

 This jellyfish has a cube shaped body and four different eyes, one  pair detects the light levels while the other one detects the colour, shape and size.

A box jellyfish has enough toxin that it can kill 60 humans. There are many species of box jellyfish, the sting of a Chironex fleckeri box jellyfish can kill a person in less than three minutes.
While no official record exists, the evidence suggest dozens of people and perhaps more than 100 or more die each year from the many species of box jellyfish that exist in all oceans. Some 20 to 40 people die from stings by box jellyfish annually in the Philippines alone.
Other species found in Hawaii, Florida are known to kill people because of heart faliure.

More than 100 people die each year from many species of box jellyfish that exists in all the oceans.

2. Lionfish: 

Dont be bullied by the beautiful looks of this fish, these pose a threat to the ecosystem of Caribbean ocean. No other fish can eat this fish because of the venom present in its wings, although not deadly to humans but can be extremely painful and can cause nausea and breathing difficulties. It deliveres its venom by an array of upto 18 needle like dorsal fish. It relies on mainly fish, shrimp and camouflage.

Their population is growing, causing some concerned in the United States. Their population has to be controlled so the Florida Fish and Wildlife Conservation Commission (FWC) is allowing divers to bring home an extra lobster per day during the state’s upcoming 2015 spiny lobster mini-season. The only condition, divers must also have harvested 10 or more lionfish on the same day.

3. Great White Shark: 

This predator is no stranger to the list of dangerous animals and is almost constantly and incorrectly perceived as the world’s most dangerous animal. The nature of the Great White is often misunderstood, the Great White Shark is not out on a mission to attack every human being that steps foot in the water. The Great White tends to attack humans when they are hunting for food, it’s nothing more than basic instinct. 

4. Stingray:

They have a  flattened bodies which allow them to effectively conceal themselves in their environment. Stingrays do this by agitating the sand and hiding beneath it. Because their eyes are on top of their bodies and their mouths on the undersides, stingrays cannot see their prey; instead, they use smell and electroreceptors. A stingray feeds on small fish, snails, clams, and shrimp, and some other small sea creatures.

These do not harmful to humans unless they step on it.

5. Stone fish: 

This fish is an expert to hide itself in the rocks underwater due to its camouflaged body. This is regarded as the most venomous fish in existence. Its dorsal fins are so sharp that they can pierce through a shoe. It also has many species, some of which hide themselves in the plain site of seafloor so watch your step.

6. Pufferfish: 

You don't even have to be near water for this creature to kill you. The pufferfish, packs tetrodo toxin which is even stronger than cyanide. It has the ability to suck in water and swell upto two times its normal size. A drug is made from the puffer's toxin which has been tested for treatment of withdrawal symptoms from drugs like heroin.

7. Moray Eel: 

These Moray have a snakelike body, protruding snout and wide jaws. They're fish, by the way, and they can be up to 8 feet long.

A bite from their razor-sharp teeth and powerful, locking jaws will produce ragged wounds that are prone to infection from the bacteria inside the eels’ mouths but if morays bite out of fear or by accident (especially when foraging for food), they will usually release their grip and let you go.

They hunt at night and in the daytime they hide in crevices and holes. They'll eat any fish or other creature they can catch.