The animals contain a fluorescent substance which absorbs harmful ultraviolet radiation and emits harmless blue light.
The parasite is a type of isopod—an ancient order of crustaceans that includes woodlice and their relatives.
Crustaceans emit a wide array of sounds underwater, like many other marine animals.
The bizarre creatures are colloquially known as "Elvis worms" due to their shiny scales being reminiscent of the King of Rock's famous sequinned suits.
"I've gone on numerous expeditions and have never, ever, seen anything like this," said researcher Rebecca Helm.
These long-term cooperative relationships between unrelated bats appear to be similar in form and function to human friendships.
Robber crabs—also known as coconut crabs—are the largest terrestrial invertebrates in the world
Upside-down jellyfish are found in warm coastal waters—such as mangroves, bays and lagoons—around the world.
The yellow-footed antechinus is a marsupial has a rare and unusual mating behavior known as "male semelparity."
While jellyfish are fairly common in the area, such large congregations are quite unusual at this time of year.
Some insects can find their way into your home by hitching a ride on Christmas trees.
Komodo dragons—otherwise known as Komodo monitors—are the largest and heaviest lizards in the world.
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.