Invader of The Week

Invader Of The Week – The North American Comb Jelly Fish

The North American comb jelly fish is one of the most frightening examples of the damage a foreign invasive species transported by ballast water can cause. The invasion of The North American Comb Jellyfish in the Black Sea likely transpired through hitching a lift with departing ships from the American Atlantic coast in 1982. Extreme effects followed as the foreign species had no opposition in these waters...

Invader Of The Week – The Eurasian Ruffe

The Eurasian ruffe is a small fresh water fish native to Northern Europe and Asia. The ruffe definitely makes up for its small size by embracing its innate aggressive nature which is further enhanced by its large spiky dorsal fin. Likely through the means of ballast water tanks, the ruffe has managed to travel to and inhabit many foreign waters around Europe and more recently has even managed to make its way to the North American Great Lakes...

Invader Of The Week – The Monkey Goby

The monkey goby is a small fish native to the Black Sea and Caspian Sea. They can be easily mistaken for other types of goby’s in the goby fish family however can be differentiated by their second dorsal fin. The monkey goby has invaded many areas around Europe likely through means of travelling in the ballast water tanks of ships. This has created large ecological effects in the foreign waters as the monkey goby's are feeding on enormous quantities of plankton and crustaceans at an increasing rate...

Invader Of The Week – The Veined Rapa Whelk

The Veined Rapa Whelk is a large marine snail with a beautiful and intricate shell. They originated from the Western Pacific Ocean, however have spread far and wide into areas of Asia, Europe, South America and North America and are continuing to spread. The method of introduction into the various foreign waters is unknown however it is highly likely to be through travelling in the ballast water tanks of ships.

Invader Of The Week – The European Green Crab

The European Green Crab is native to Europe and North Africa and is thought to have invaded North America first in 1817. It is believed that the Green Crab first entered into US waters through being carried in the holds of wooden ships and has since multiplied through being transported through ballast water tanks. It is presumed that the Green Crab is transferred during their prolonged larval stage as this would explain their high survival rate...

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