symbiosis

An example of an amphipod. Credit: Uwe Kils/Wikimedia Commons, CC BY-SA 3.0 (light)

The Deep Sea Creatures That Hide from Predators By Turning Almost Fully Invisible

ncylostoma caninum, a type of hookworm, attached to the intestinal mucosa. Credit: Wikimedia Commons

Sometimes, (Parasitic) Worms Come With Perks