New Delhi, May 17 -- Scientists have discovered a small three-eyed predator called Mosura fentoni. Nicknamed the "sea moth", the creature lived in the ocean about 506 million years ago.

The new study was published on May 13 in the journal Royal Society Open Science.

It belonged to an ancient group of sea creatures called radiodonts, which are related to today's insects, spiders and crabs. Fossils show it had a unique body part with 16 segments and gills, helping it breathe better.

This feature is similar to parts seen in modern animals like horseshoe crabs and woodlice. Experts believe Mosura fentoni evolved in a way like these modern creatures. The discovery shows that ancient sea animals were already very diverse.

"The new species e...