Jellyfish Threatens Marine Life

 

Factor causes jellyfish population growth is pollution, temperature and fishing.


Vladnews - Jellyfish are sea creatures are ugly, dangerous enough, and unlike the other killers in the ocean the sharks. Jellyfish are not too tasty to eat. Unfortunately, the animal is now ready to master the two-thirds of planet Earth.


In 2006 to 2010, a group of large swarm of jellyfish invade Spanish beaches. Sting tens of thousands of swimmers. In some places, jellyfish are present in concentrations up to 10 per square meter.

These jellyfish group also appeared in other regions around the world. In 2007, Hawaii and Ireland experienced pest jellyfish. Israeli and French waters in 2008. Tunisia and Italy was invaded in 2009. In Japan, a jellyfish measuring up to 1.8 meters more and more popping up.


In the waters of northern Australia, populations of jellyfish with tentacles up to 2.5 meters also explode. In fact, this jellyfish has toxins that can kill humans within three minutes.


According to María Luz Fernández de Puelles, researchers from the Spanish Institute of Oceanography's Balearic Oceanography Center, there are three causes. As quoted from Mother Nature Network, December 28, 2010, jellyfish fertile life as a side effect of pollution, rising water temperatures and excessive fishing.
Man is too much waste, including agricultural waste into rivers that eventually flow into the sea. As is known, fertilizer designed to enhance plant growth. Apparently, fertilizer also works the same in the sea by increasing algae growth.


The problem, algae are food for micro-organisms in the sea, which is the main food of jellyfish. The more abundant algae and micro-organisms, the more secure also live jellyfish.


Second, global warming causes the temperature of the warm sea water. From research, it triggers a jellyfish in the more fertile reproduce and make them swim closer to shore. Similarly, the tropical jellyfish that have poisonous tentacles.


Third, excessive fishing, especially tuna, sharks, and sea turtles also make a jellyfish increasingly free to roam. In fact, predatory animals that normally eat the jellyfish and its eggs.
"Jellyfish are a very voracious predators and compete with other planktonic organisms and to fight for food," said de Puelles. "With the skyrocketing growth of the jellyfish, then they will change in the marine ecosystem structure drastically."
Photo of a jellyfish with a diver