📸 PhotoPhoto: Sasaki, M. 1929. A Monograph of the Dibranchiate Cephalopods of the Japanese and Adjacent Waters. Journal of the College of Agriculture, Hokkaido Imperial Unive · CC0 · Wikimedia Commons Source
Spear squid
Heterololigo bleekeri (Spear squid · Spear squid)
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its maximum mantle length of 40 cm is about a handspan longer than the long side of an A4 sheet of paper (29.7 cm).
- 💡 It is a commercially harvested species caught using set nets and trap nets (SeaLifeBase).
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.
📖 1. Overview
The spear squid is a loliginid squid living in shallow waters of the Northwest Pacific and is harvested commercially.
🦴 2. Anatomy & Morphology
Its mantle length reaches up to 40 cm.
🔍 3. Ecology & Behavior
Its lifespan is about 1 year. It lives in the water column at depths of 0–100 m and is caught with nets such as set nets and trap nets.
🇰🇷 4. Connection to Korea
It is listed as the spear squid in the National List of Species of Korea.
📚 Sources & References
- • IUCN Red List LC (2019) — https://www.iucnredlist.org/species/163017/964020
- • IUCN Red List category LC — latest assessment at iucnredlist.org
- • marinespecies.org — aphia.php
- • iucnredlist.org — 964020
- • 국가생물종목록(국립생물자원관) ktsn 120000216905 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000216905
- • wikidata.org — Q13229047
- • commons.wikimedia.org — File:Heterololigo bleekeri.jpg
- • sealifebase.se — Heterololigo-bleekeri.html
- • species.nibr.go.kr — mainHome.do
- • Silhouette: PhyloPic — Cagri Cevrim · CC0 1.0 (Related taxon silhouette — Loligo vulgaris)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.