The creatures are invisible to the naked eye, measuring around 100 micrometers long—about as thick as a human hair.
Tardigrades—otherwise known as "water bears" or "moss piglets"—are considered extremophiles, organisms that thrive in extreme environments.
Lemurs, and several other primate species, are known to rub objects, substances or materials over certain body parts in a behavior known as "self-anointing."
"This was one strange-looking fish."
Researchers suggest that the older females may be seducing the males with pheromone signals.
Stonefish are native to coastal waters in the Indian and Pacific Oceans.
The species of the fish could not be clearly identified.
The animals were gathered from depths of up to 16,000 feet by the research ship Investigator during a month-long voyage in 2017.
A Russian deep-sea fisherman pulls up alien-looking creatures from the dark depths.
Nyan htoo has now had the enormous organ removed.
The animal is all black and has translucent, sharp teeth.
Naturalists discovered 139 new species in Southeast Asia in 2014.