{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.shark","code":"thing-q7372","url":"https://ver.cy/models/thing/q7372/","name":"shark","alternateNames":["Paracestracion falcifer"],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.LIV"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A group of cartilaginous fishes of the subclass Elasmobranchii characterised by a cartilaginous skeleton, five to seven gill slits, pectoral fins not fused to the head and skin covered in dermal denticles, ranging from the dwarf lanternshark to the whale shark, the largest fish, with over 500 living species and a fossil record of more than 400 million years including extinct forms such as Paracestracion; sharks are apex and mesopredators in marine ecosystems, are fished for meat, fins and other products, and many species are threatened by overfishing.","purpose":"Let an agent explain sharks and their biology, relay diversity, evolution and conservation from ichthyological sources, describe sharks as food and in fisheries with regulation attributed, and distinguish sharks from rays, bony fishes and dolphins and from exaggerated fears.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Cartilaginous skeleton","Gill slits","Dermal denticles","Electroreception"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What sharks are.","layers":[{"id":"definition","name":"Definition","description":"Definition and features.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What are sharks, and how do they differ from rays, bony fishes and marine mammals?","kind":"definition"},{"text":"Is the question about sharks in general, a species, sharks as food or safety?","kind":"boundary"}]}]},{"id":"diversity","name":"Diversity","description":"Diversity.","findings":[{"id":"diversity-finding","name":"Diversity","description":"Diversity.","questions":[{"text":"What are the main shark orders and notable species, from lanternsharks to whale sharks?","kind":"definition"},{"text":"Which entry fits the specific species?","kind":"action"}]}]}]},{"id":"biology","name":"Biology","description":"Biology and evolution.","layers":[{"id":"biology","name":"Biology","description":"Biology.","findings":[{"id":"biology-finding","name":"Biology","description":"Biology.","questions":[{"text":"How do sharks sense, feed, reproduce and migrate?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"evolution","name":"Evolution","description":"Evolution.","findings":[{"id":"evolution-finding","name":"Evolution","description":"Evolution.","questions":[{"text":"How did sharks evolve, and what do fossils such as Paracestracion and megalodon show?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"people","name":"People","description":"Sharks and people.","layers":[{"id":"fisheries","name":"Fisheries","description":"Fisheries and food.","findings":[{"id":"fisheries-finding","name":"Fisheries","description":"Fisheries.","questions":[{"text":"How are sharks fished and eaten, and what rules govern finning and trade, with positions attributed?","kind":"provenance"},{"text":"Is the presentation neutral?","kind":"boundary"}]}]},{"id":"safety","name":"Safety","description":"Safety.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"How rare are shark attacks, and what do experts advise?","kind":"provenance"},{"text":"Which entry fits shark attack?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Conservation and culture.","layers":[{"id":"conservation","name":"Conservation","description":"Conservation.","findings":[{"id":"conservation-finding","name":"Conservation","description":"Conservation.","questions":[{"text":"Which sharks are threatened, and what conservation measures exist?","kind":"provenance"},{"text":"Which entry fits shark conservation?","kind":"action"}]}]},{"id":"culture","name":"Culture","description":"Culture.","findings":[{"id":"culture-finding","name":"Culture","description":"Culture.","questions":[{"text":"How are sharks portrayed in culture, from Pacific traditions to Jaws?","kind":"provenance"},{"text":"Which entry fits sharks in culture?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe shark species, biology and conservation status from scientific sources.","Report shark sightings to beach authorities or researchers.","Give balanced information on the actual risk of shark bites."],"mustNot":["Encourage killing, finning or harassing sharks.","Exaggerate shark danger in a way that fuels culls.","Advise trading protected species or their products.","Give personal dietary advice about mercury in shark meat."],"requiresHuman":["Closing beaches or deploying shark control measures.","Handling or tagging a live shark."]},"ethics":{"considerations":["Many shark species are threatened by overfishing and finning.","Fear-driven policy can kill non-target wildlife and mislead the public."],"affectedParties":["Sharks themselves","Swimmers and surfers","Fishing communities"]},"owners":{"steward":"Nobody: wild and protected by law in many waters.","roles":[],"masterSystems":["Species conservation status databases","Fisheries management records"]},"relations":[{"target":"Q152","type":"parent","note":"registry parent class"},{"target":"Q600396","type":"parent","note":"registry parent class"},{"target":"fish","type":"related","note":"in registry terms"},{"target":"fish as food","type":"related","note":"in registry terms"},{"target":"Elasmobranchii","type":"related","note":"with rays"},{"target":"overfishing","type":"related","note":"and finning"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.shark","Wikidata: Q7372 (https://www.wikidata.org/wiki/Q7372)","superorder: Selachimorpha sharks"]},"properties":{"applicability":"required","items":["living species: over 500 count","whale shark length: up to about 18 m","fossil record: over 400 million years","species threatened: about one third ratio - IUCN assessments"]},"recognition":{"applicability":"required","items":["Cartilaginous fish with gill slits and denticles","Over 500 species from lanternsharks to whale sharks; fossil sharks such as Paracestracion","Rays are flattened relatives; bony fishes have bone skeletons; dolphins are mammals","Streamlined cartilaginous fishes with gill slits, a heterocercal tail and rough skin."]},"capabilities":{"applicability":"required","items":["explain biology and diversity","relay evolution and conservation","describe fisheries and food","distinguish from similar animals"]},"hazards":{"applicability":"required","items":["Exaggerated fear of shark attacks","Overfishing and finning","Mercury in shark meat","Confusing sharks with rays or dolphins"]},"interfaces":{"applicability":"required","items":["CITES listings for many shark species","Fisheries management and finning bans","Regional fisheries organisation rules","Food safety rules on mercury in shark meat"]},"context":{"applicability":"required","items":["Not applicable; an animal group.","ground sharks such as requiem and hammerhead sharks","mackerel sharks such as the great white and mako","carpet sharks including the whale shark","dogfish and lanternsharks","angel, saw and other orders","extinct sharks such as Paracestracion and megalodon","sharks as food such as shark meat and fins"]}},"sources":[{"title":"Wikidata item Q7372: shark","url":"https://www.wikidata.org/wiki/Q7372","note":"identity and sense of the item"},{"title":"Wikipedia: Shark","url":"https://en.wikipedia.org/wiki/Shark","note":"general description of the item"}],"openQuestions":["Should shark finning and specific orders be separate primary entries?","How should ichthyological sources be linked?","The registry entry has a merged alias naming a fossil genus; should it be split off?"],"resources":{"spec":"/models/things/publications/thing-q7372/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q7372/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T05:57:31Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:52:01+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}