Along the western coast of Sweden, a giant herring was found.

Known as the giant oarfish that comes with a scientific name Regalecus glesne, the fish measures 11.4 feet long.

According to the maritime museum, it is the first fish of that kind found in 130 many years. It was found dead in the fishing village in Bovallstrand, about 90 kilometers from Norweigian boarder.

“Down at the water, there was something big floating. At first we thought it was a big piece of plastic. But then we saw an eye. I went down to check and saw that it was this extremely strange fish,” Kurt Ove Eriksson, the passer-by who found the specimen, told daily Svenska Dagbladet.

This fish has metallic silver color with blotches and wavy markings on the body, and pink or red fins.

This species has a concave head profile and a highly protrusible mouth. It has a dorsal fin that runs the entire length of the body, but lacks an anal fin. There are tiny spines projecting laterally off each caudal and pelvic fin ray.

Although several species of oarfishes have been described, there is now believed to be only one species.

The Oarfish is reported to be the longest of all fishes. It has a ribbon-like body that has been reliably documented to grow to 8 m in length, however specimens up to 17 m in length have been reported.

“The last time we saw a King of Herrings in Sweden was in 1879,” the House of the Sea museum in Lysekil, where the fish was taken to, said in a statement.

“We don’t know much about the species,” it said, “but believe it lives in deep waters, at least 1000 meters (3280 feet) deep, and many believe it’s at the origin of the sea serpent myth,” or stories of mythological sea creatures like the Loch Ness Monster.

The dead fish was now kept frozen at the museum, had a deep cut through its body and was missing its beautiful, typical back fin.  The museum said the fish might be added to an exhibit on sea monsters planned later this year.