Sea Penウミエラ
Cavernularia obesaNE— Not Evaluated
Cavernularia obesa, known in Japanese as umi-saboten ("sea cactus"), is a colonial sea pen that lives on sandy-muddy seabeds in the warm waters of the Indo-West Pacific, including areas south of Ishikari Bay in Japan. Its club-shaped colony retracts into the sand by day and extends at night to feed on plankton, and it is known for bioluminescing when touched. Its conservation status has not been formally evaluated by the IUCN.
Sea Pen (reference photo)
Species Data
Did You Know?
Where to See This Species
1 facilities · 0 individuals
Toba AquariumMieOpened in 1955
国内で初めて繁殖に成功し、生きもの図鑑にも掲載。館内で展示されている Source
Conservation Story
Conservation Status
IUCNの世界的評価は掲載されていないためnull。
Habitat
砂泥底の浅海から深海。
Threats
- 海底の攪乱
- 底引き網などの漁業影響
- 海洋汚染
Conservation & Breeding Efforts
- 海底生息地の保全
- 脆弱な海域の保護
Sources
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FAQ
- Why is it called a 'sea cactus' in Japanese?
- Its club-shaped colony resembles a cactus, and it retracts into the sand during the day and extends at night, similar to how a cactus stores water. Source
- Does it glow?
- Yes—when disturbed it bioluminesces, with the glow spreading across the colony like a wave from the point of contact. Source
Source: ja.wikipedia.org en.wikipedia.org