shark

1. Any of numerous elongate mostly marine carnivorous fishes with heterocercal caudal fins and tough skin covered with small toothlike scales (synset 101484971)
   is a type of: elasmobranch, selachian - any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates
   subtypes:

   • cow shark, hexanchus griseus, six-gilled shark - large primitive shark widely distributed in warm seas
   • mackerel shark - fierce pelagic and oceanic sharks
   • alopius vulpinus, fox shark, thrasher, thresher, thresher shark - large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed
   • carpet shark, orectolobus barbatus - shark of the western Pacific with flattened body and mottled skin
   • ginglymostoma cirratum, nurse shark - small bottom-dwelling shark of warm shallow waters on both coasts of North America and South America and from southeast Asia to Australia
   • carcharias taurus, odontaspis taurus, sand shark, sand tiger - shallow-water shark with sharp jagged teeth found on both sides of Atlantic; sometimes dangerous to swimmers
   • rhincodon typus, whale shark - large spotted shark of warm surface waters worldwide; resembles a whale and feeds chiefly on plankton
   • cat shark - small bottom-dwelling sharks with cat-like eyes; found along continental slopes
   • requiem shark - any of numerous sharks from small relatively harmless bottom-dwellers to large dangerous oceanic and coastal species
   • dogfish - any of several small sharks
   • hammerhead, hammerhead shark - medium-sized live-bearing shark with eyes at either end of a flattened hammer-shaped head; worldwide in warm waters; can be dangerous
   • angel shark, angelfish, monkfish, squatina squatina - sharks with broad flat bodies and winglike pectoral fins but that swim the way sharks do
2. A person who is ruthless and greedy and dishonest (synset 110606082)
   is a type of: offender, wrongdoer - a person who transgresses moral or civil law
   subtypes: loan shark, moneylender, shylock, usurer - someone who lends money at excessive rates of interest
3. A person who is unusually skilled in certain ways (synset 110605965)
   "a card shark"
   is a type of: expert - a person with special knowledge or ability who performs skillfully

1. Play the shark;
   Act with trickery (synset 202579088)
   is a type of: cheat, chisel - engage in deceitful behavior; practice trickery or fraud
2. Hunt shark (synset 201146080)
   is a type of: fish - catch or try to catch fish or shellfish

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