- · Grid units represent actual meters (m); human and animals are drawn to the exact same scale with original silhouette aspect ratios preserved.
- · When a size range is recorded (e.g. 1–1.6m), the lower bound is used for scale comparison.
- · Dendrophyllia ijimai: Drawn using our own body-shape diagram where an open-licensed silhouette was unavailable.
- · Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0
Dendrophyllia ijimai
Dendrophyllia ijimai (Dendrophyllia ijimai · Dendrophyllia ijimai)
Not Evaluated (NE) on the IUCN Red List yet.
🇰🇷 Class II endangered wildlife (Korea)
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 The height of the largest colonies, about 12.5 cm, is nearly five times the diameter of a Korean 500-won coin (26.5 mm) (Comparison).
- 💡 The National Institute of Ecology notes as a threat factor that careless underwater leisure activities such as scuba diving in Jeju waters can damage this coral.
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
Dendrophyllia ijimai is a small tree-shaped stony coral living at depths of 15–40 m in Jeju waters, and is designated as Class II endangered wildlife (Korea).
🦴 2. Anatomy & Morphology
The largest colonies are about 12.5 cm tall, with cylindrical corallites joined together in a tree shape and calcareous cups (calices) about 7–10 mm in diameter.
🔍 3. Ecology & Behavior
It captures small plankton using venomous nematocysts (stinging cells) and reproduces by budding or sexual reproduction depending on environmental conditions.
🇰🇷 4. Connection to Korea
Designated as Class II endangered wildlife (Korea), it is distributed in the waters off Jeju Island, where rising water temperatures, marine pollution, and careless underwater leisure activities are major threats.
📚 Sources & References
- • 멸종위기 야생생물 Ⅱ급 — 국가생물종목록(국립생물자원관) ktsn 120000039875 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000039875
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • Korean protection status: Class II endangered wildlife (Korea)
- • marinespecies.org — aphia.php
- • 국가생물종목록(국립생물자원관) ktsn 120000039875 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000039875
- • wikidata.org — Q3945088
- • nie.re.kr — view.do
- • nie.re.kr — list.do
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.