Soft-bodied creatures rarely stand the test of time, as their remains often decay before they can fossilize, leaving paleontologists to rely on mere speculation to describe the lives of ancient creatures. So, when scientists from Imperial College London found the preserved body of a prehistoric soft-bodied creature clinging to the shell of a fossilized brachiopod, they knew they had stumbled upon a rare find.

What they found was something called a "Drakozoon". It's a leathery blob of a creature - a member of the invertebrate super phylum called lophophorates. The Drakozoon lived during the Silurian Period and would attach itself to substrate, extending its filamentous tentacles into the ocean, feeding on any tiny morsels that drifted by them. When threatened, it would retreat into its hood until danger passed.