📸 PhotoBluefin Tuna ( Thunnus thynnus ) from de:wiki @22:11, 18. Jan 2004 by User:Anathema
Photo: Unknown author Unknown author · Public domain · Wikimedia Commons Source
Atlantic Bluefin Tuna
Thunnus thynnus (Atlantic Bluefin Tuna · タイセイヨウクロマグロ)
💡 Everyday Comparisons for Size, Mass & Speed
- 📏 Length 3m — ~1.7× the height of a 1.75 m adult human
- ⚖️ Mass 136kg — ~1.9× the mass of a 70 kg adult human
- ⚡ Speed 72.5km/h — ~1.9× Usain Bolt's 100 m world-record average speed (37.6 km/h)
Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.
Site-computed relative index from recorded values; not a formal scientific metric.
📖 1. Overview
With its streamlined body and crescent-shaped caudal fin, it crosses the oceans at 75 km/h as the fastest swimmer among bony fishes.
🌐 Wikipedia Summary ExtractThe Atlantic bluefin tuna is a species of tuna in the family Scombridae. It is variously known as the northern bluefin tuna, giant bluefin tuna, and formerly as the tunny.
🦴 2. Anatomy & Morphology
To absorb oxygen from water passing over its gills, it uses ram ventilation—swimming without stopping for even 1 second from birth until death—and keeps its body warm with a countercurrent vascular structure called the rete mirabile.
🔍 3. Ecology & Behavior
When accelerating, it folds its dorsal and pectoral fins completely into grooves along its body, reducing water resistance to nearly zero.
🇰🇷 4. Connection to Korea
Along with the Pacific bluefin tuna (Thunnus orientalis) of Korea's East and South Seas, it is a key fish species in marine fisheries ecology.
📚 Sources & References
- • Wikipedia “Atlantic bluefin tuna”
- • Wikidata Q214415
- • IUCN Red List category LC — latest assessment at iucnredlist.org
- • fishbase.se — Thunnus-thynnus.html
- • animaldiversity.org — Thunnus thynnus
- • Silhouette: PhyloPic — Russell Engelman · CC BY 4.0
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.