The BDSM community often uses "predator" as a term for someone who seeks out dominance and submission partners that are new to the lifestyle.
These partners would use the submissive or dominant in a manner that suited their personal needs instead of encouraging them to grow and learn on their own about this culture. states make legal distinctions between these categories, defining a "sexual offender" as a person who has committed a sexual offense.
A predator can be defined to differ from a parasitoid in two ways: it kills its prey immediately; and it has many prey, captured over its lifetime, where a parasitoid's larva has just one, or at least has its food supply provisioned for it on just one occasion. Micropredators are small animals that, like predators, feed entirely on other organisms; they include fleas and mosquitoes that consume blood from living animals, and aphids that consume sap from living plants.
However, since they typically do not kill their hosts, they are now often thought of as parasites.
Animals that graze on phytoplankton or mats of microbes are predators, as they consume and kill their food organisms; but herbivores that browse leaves are not, as their food plants usually survive the assault. They are common among insects, including mantids, dragonflies, lacewings and scorpionflies.
In some species such as the alderfly, only the larvae are predatory (the adults do not eat).
A sexual predator is a person seen as obtaining or trying to obtain sexual contact with another person in a metaphorically "predatory" or abusive manner. states have a special status for criminals designated as sexually violent predators, which allows these offenders to be held in prison after their sentence is complete if they are considered to be a risk to the public.
Analogous to how a predator hunts down its prey, so the sexual predator is thought to "hunt" for his or her sex partners. They can also be placed on a sex offender list which is viewable by everyone on the Internet.
In marine environments, most cnidarians (e.g., jellyfish, hydroids), ctenophora (comb jellies), echinoderms (e.g., sea stars, sea urchins, sand dollars, and sea cucumbers) and flatworms are predatory.Among freshwater and marine zooplankton, whether single-celled or multi-cellular, predatory grazing on phytoplankton and smaller zooplankton is common, and found in many species of nanoflagellates, dinoflagellates, ciliates, rotifers, a diverse range of meroplankton animal larvae, and two groups of crustaceans, namely copepods and cladocerans.