Predation
Videos
Predation is a biological interaction in which one organism, the predator, kills and eats another organism, its prey. The predator-prey relationship is one of a family of common feeding behaviours tha
Solitary predator: a polar bear feeds on a bearded seal it has killed.
Social predators: meat ants cooperate to feed on a cicada far larger than themselves.
Spider wasps paralyse and eventually kill their hosts, but are considered parasitoids, not predators.
Carnivorous plant: sundew engulfing an insect
Parasitism
Videos
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of li
Predation
…the predator, kills and eats another organism, its prey. The predator-prey relationship is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the host) and parasitoidism (which always does, eventually). It is distinct from scavenging on dead prey…
A fish parasite, the isopod Cymothoa exigua, replacing the tongue of a Lithognathus
Head (scolex) of tapeworm Taenia solium, an intestinal parasite, has hooks and suckers to attach to its host
The parasitic castrator Sacculina carcini (highlighted) attached to its crab host
Human head-lice are directly transmitted obligate ectoparasites