Ikimono KokuhoLiving Treasures of Japan
National Natural Monument
Other invertebrates

Diving Bell Spider

Argyroneta aquatica

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The diving bell spider is Japan's only spider that lives almost entirely underwater, carrying air into a silk-spun chamber among water plants and living inside it. It eats prey and lays eggs there. Kyoto's Mizorogaike Pond, a wetland with relict ice-age life, has its biological community designated a Natural Monument, and this spider is part of it.

Scientific name
Argyroneta aquatica
Group
Other invertebrates
Prefectures
Kyoto
Japanese Red List (Ministry of the Environment)
VulnerableMinistry of the Environment Red List 2020
日本語
ミズグモ
简体中文
水蛛

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Natural Monuments related to the Diving Bell Spider

Where to see the Diving Bell Spider

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Frequently asked questions

Yes. The Diving Bell Spider is protected as a Natural Monument (1 national and 0 prefectural designations). Each designated site is listed under "Natural Monuments related to the Diving Bell Spider" on this page.

The Diving Bell Spider is designated as a species without a fixed area and lives in places such as Kyoto.

You can see the Diving Bell Spider at Inokashira Park Zoo, among others (confirmed on each facility's official website on 2026-10-15).

The Diving Bell Spider is listed as "Vulnerable" in the Ministry of the Environment Red List 2020 (listed as ミズグモ).

Animals related to the Diving Bell Spider

Animals in the same group or designated in the same area.

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