第 1121 號，共 1 402 號

Clinging jellyfish

Gonionemus vertens

名字的由來： It is called the clinging jellyfish because during the day it attaches itself to surfaces, such as seagrass, using the adhesive patches on its tentacles.1

需要看醫生不要碰很少致命，但被螫了需要看醫生。

水母和會螫人的海洋生物

會螫人的觸手吃：肉

對人的危險: 嚴重被螫了需要看醫生。死亡案例非常罕見。

The clinging jellyfish is a small jellyfish, with a bell only 1 to 3 cm across. It lives in shallow coastal waters across much of the Northern Hemisphere. Its sting can be strong in some areas, so it is worth knowing what it looks like.1

分布在

Shallow coastal waters of the north Pacific, including Japan and Russia; also Europe, the Atlantic coast of the United States and parts of the Mediterranean1

太平洋, 大西洋

首頁

It lives in shallow coastal and brackish waters. During the day it attaches itself to surfaces, especially seagrass.1

長度

1 cm 到 4 cm (0,4 in 到 1,6 in)1

最高速度

大約 0,35 km/h（0,22 mph）

游泳, 粗略估計

牠吃什麼？

It mostly feeds at night in open water on zooplankton such as fish larvae and tiny crustaceans. It may also catch prey while attached to surfaces during the day.1

Clinging jellyfish 的照片 — Clinging jellyfish。照片：A. C. Tatarinov。 CC0, Wikimedia Commons.

怎麼認出牠

Has a transparent bell lined with about 60 to 80 tentacles1
Gonads are orange, red or violet in females and yellow-brown in males1
The tan manubrium (mouth structure) hangs down in the middle of the bell1
Bell is usually 1 to 3 cm across; a tentacle can be twice the bell's diameter when fully extended1

毒液力量

會螫人的觸手

有東西碰到時，成千上萬個小小的刺細胞就會發射。

牠的毒液有什麼作用？

Its sting can cause pain, a swollen throat, chest tightness, muscle cramps, neuropsychiatric changes (effects on mood, thinking or behaviour) and anaphylactic shock, a severe allergic reaction.1

牠對人有多危險？

對人的危險: 嚴重被螫了需要看醫生。死亡案例非常罕見。

In much of its range the sting is strong enough to cause serious symptoms. Stinging incidents have been reported from East Asia, Europe and the Atlantic coast of the United States. Off North America's northeast Pacific coast, its sting cannot be felt and it is considered harmless to people.1

如果牠螫人

離開水裡，把觸手拿掉（戴手套或用布）。
熱帶箱形水母：在螫傷處倒醋至少 30 秒，求救，並準備好做心肺復甦術（CPR）。藍瓶水母和大多數其他水母：用海水沖洗，再用熱水止痛。

一定要先打緊急電話（112、000、911）。這是一般急救指引，不是醫療建議。急救基本知識

注意安全

絕對不要碰、抓或捉弄野生動物，就算是很小的動物，就算牠看起來在睡覺或已經死了也一樣。
給牠空間。如果遇到了，保持冷靜，慢慢往後退，讓牠自己離開。
如果被牠螫了：保持冷靜，保持不動，打緊急電話（112、000、911）或趕快去醫院。記住牠的樣子，有照片會很有幫助。

牠不是想來抓你。牠用毒液來捕捉食物或保護自己，而且牠更想躲起來。更多安全知識

在世界上的哪裡？

非洲亞洲歐洲北美洲南美洲澳洲與大洋洲太平洋大西洋

牠有多大？

牠有多長？

大約跟一根迴紋針一樣長

Clinging jellyfish 跟「你」比起來有多大？

只是在你的瀏覽器裡做算術。什麼都不會儲存，也不會傳送到任何地方。

牠有多快？

一隻花園蝸牛 大約 0,05 km/h (0,03 mph)

Clinging jellyfish 大約 0,35 km/h (0,22 mph)

一個正在游泳的人 大約 3 km/h (1,9 mph)

值得知道

小知識

Some scientists think the clinging jellyfish may be a group of closely related species, because its sting and body shape vary from place to place.1

The jellyfish appear once the water warms to about 17 to 18 °C, so they follow a yearly pattern and sometimes appear in large numbers at once.1

The medusa (jellyfish) stage usually lasts no more than three months, but the polyp stage can last for years.1

Polyps can split into several new polyps by budding.1

In Europe, the species is non-native and has been found in the Mediterranean and along the Atlantic coast from Portugal to Norway and Sweden.1

破解迷思

迷思： The clinging jellyfish is harmless everywhere.

真相： Its sting is harmless off the northeast Pacific coast of North America, but it can be strong and dangerous in East Asia, Europe and the Atlantic coast of the United States.1

給毒液專家

學名: Gonionemus vertens
類群: 水母和會螫人的海洋生物
家人: Olindiidae2
排序: Limnomedusae
各大洲: 太平洋, 大西洋, 海洋
寶寶: Medusae release tens of thousands of eggs and sperm into the sea. The fertilised young become planula larvae, which settle on the seabed as tiny polyps.1
對人的危險: 3 / 5: 嚴重3