第 1094 號，共 1 402 號

Atlantic sea nettle

Chrysaora quinquecirrha

只是會痛不要碰會痛，但不會對你造成嚴重傷害。

會螫人的觸手吃：肉

The Atlantic sea nettle is a jellyfish that lives along the Atlantic coast of the United States. It has a bell-shaped body and stinging tentacles that it uses to catch food and to defend itself. Its sting is painful for people, but it is not strong enough to cause death except through an allergic reaction.1

分布在

Atlantic coast of the United States1

大西洋, 加勒比海, 墨西哥灣

長度

40 cm (1,3 ft)1

最高速度

大約 0,7 km/h（0,44 mph）

游泳, 粗略估計

牠吃什麼？

It feeds mainly on zooplankton, ctenophores, other jellies and sometimes crustaceans. It uses its stinging tentacles to immobilise prey, then moves the food into its gastrovascular cavity, a body cavity used for digestion.1

Atlantic sea nettle 的照片 — Atlantic sea nettle。照片：Pauline Walsh Jacobson。 CC BY 4.0, iNaturalist.

怎麼認出牠

Bell-shaped body that is usually semi-transparent1
Small white dots and reddish-brown stripes on the bell1
Typically pale, pinkish or yellowish, with deeper stripes near the edge of the bell1
Bells without stripes look white or opaque1
Smaller than the Pacific sea nettle1

常被誤認為： It was often confused with several other Chrysaora species, so older reports of this jellyfish from other parts of the Atlantic and other oceans may be wrong. C. chesapeakei, found in estuaries on the Atlantic coast of the United States and in the Gulf of Mexico, was only recognised as a separate species in 2017. The Atlantic sea nettle is smaller than the Pacific sea nettle and has more variable colouring.1

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？

Each tentacle is covered in thousands of microscopic cells that fire venom-coated stinging filaments on contact. The venom can kill smaller prey or stun predators. In people, the sting most likely causes a painful but non-lethal rash that usually lasts about 20 minutes. Some earlier reported stings in the Philippines caused vascular insufficiency (poor blood flow) and mononeuritis (inflammation of a nerve).1

牠對人有多危險？

對人的危險: 疼痛可能會非常痛，但幾乎從來不會很嚴重。

Its sting is rated from moderate to severe. It is not potent enough to cause human death, except through an allergic reaction. While the sting is not particularly harmful, it can cause moderate discomfort.1

牠害怕時會做什麼？

When touched, its tentacles fire venom-coated stinging filaments that stun or deter a perceived predator.1

如果牠螫人

Misting vinegar over the affected area can neutralise the sting. This stops unfired stinging cells from firing and adding to the discomfort.1
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大西洋加勒比海墨西哥灣

牠有多大？

牠有多長？

跟 2 根香蕉頭尾相接一樣長跟 12 塊玩具積木排成一排一樣長

Atlantic sea nettle 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)

Atlantic sea nettle 大約 0,7 km/h (0,44 mph)

一個正在游泳的人 大約 3 km/h (1,9 mph)

值得知道

小知識

Its body has no excretory or respiratory organs.1

Its stinging cells can also entangle or anchor prey, not only inject venom.1

Sea turtles, ocean sunfish and larger jellyfish are its main natural predators.1

It has a free-swimming stage and a polyp stage, and each reproduces in a different way.1

Its body is radially symmetrical, with a single mouth at the centre of one end.1

破解迷思

迷思： The Atlantic sea nettle lives in the Atlantic and other oceans around the world.

真相： Earlier reports from other oceans were often mistaken, because this jellyfish was confused with other Chrysaora species. It is known from the Atlantic coast of the United States.1

給毒液專家

學名: Chrysaora quinquecirrha
類群: 水母和會螫人的海洋生物
家人: Pelagiidae2
排序: Semaeostomeae
各大洲: 大西洋, 加勒比海, 墨西哥灣, 海洋
寶寶: The free-swimming stage reproduces sexually, and the polyp stage reproduces asexually.1
對人的危險: 2 / 5: 疼痛3