A couple went for causal fishing in Florida and caught a monster shrimp. According to Live Science report, fisherman Steve Bargeron, while on a fishing trip off a dock in Fort Pierce, Florida saw the couple with a strange creature, which looked like a lobster.

Bargeron said that the couple was not interested to keep the strange creature. He also clicked few images of the uncommon shrimp before throwing it back into the lake. The images were posted on the Facebook page of the Florida Fish and Wildlife Commission (FWC).

The FWC says that the creature was 45 cm long (about 18 inches), and was a mantis shrimp, which is more appropriately called stomatopod. But, they are unable to know the exact species of mantis shrimp it is, as there are 400 species or even more.

Mantis shrimps have exciting features as their eyes have many advanced features. The best about this creature is lethal methods by which it kills its preys.

Roy Caldwell, an integrative biology professional, said that the strange sea creature is an over-sized mantis shrimp.

"This particular group is Lysiosquillidae and are almost all banded yellow and black across their bodies. They can live for 30 years and can grow to be 12 inches (30.5 centimetres) long", affirmed Caldwell. He also said that the specimen of the Lysiosquillidae family as big as the couple found in off Florida is unlikely.

Scientists say that they have examined stomatopods for 50 years and an 18-inch catch is strange because the largest mantis of the same species noticed last time was 15 inches long. The fisherman said that at that time, he did not have measuring tape to measure the accurate size of the shrimp.