Fishermen in the Crimean city of Sevastopol have turned up some surprising catches recently.

Fugu fish, a deadly oceanic puffer fish usually only found in the tropics, have made their way into the city's waters. The fisherman saw this fish float just near the shore. 

The fish fill their bodies with water or air if threatened, and their organs are filled with a poison more deadly than  cyanide  and so  potent   that just a  tiny   amount will kill you.

So why people consider it to be  a delicacy in Japan  is beyond one’s mind.

Local fishermen hold the fugu in and raise the alarm to the authorities. Now, researchers at the Institute of Biology in the southern seas in Crimea have been tasked with working out how the puffer fish ended up there. The authorities don’t let people even swim near the place where the fish was found.

Their current  hypothesis  is that the fish may have reached the northern hemisphere via the Suez Canal and  infested  the Mediterranean Sea for up to 10 years.

Local authorities believe the fish to pose a threat to Black Sea  fauna  and the local population.

Probably because they’re super poisonous.

Funnily enough, chefs in the region aren't exactly  rushing  to put the fish on the menu.