第 1138 號，共 1 402 號

Giant green anemone

Anthopleura xanthogrammica

無害對人無害。不用擔心。

會螫人的觸手吃：肉

The giant green anemone is a sea animal that looks like a flower but is a relative of jellyfish. It lives on rocky and sandy shores along the Pacific coast of North America, where it is covered by water for most of the day. Its bright green colour comes partly from tiny algae that live inside its body and make food for it.1

分布在

Pacific coast from Alaska to southern California, sometimes as far south as Panama1

太平洋

首頁

It prefers sandy or rocky shorelines where water stays for most of the day, and it is found in tide pools. It is also sometimes found in deep channels of more exposed rocky shores and on concrete pilings in bays and harbours.1

長度

30 cm (1 ft)1

最高速度

大約 0,01 km/h（0,01 mph）

游泳, 粗略估計

牠吃什麼？

It catches prey with stinging cells in its tentacles. Its main food is detached mussels, and it also eats sea urchins, small fish and crabs. There are rare records of it eating seabirds.1

Giant green anemone 的照片 — Giant green anemone。照片：Cricket Raspet。 CC BY 4.0, iNaturalist.

怎麼認出牠

Bright green when underwater in good sunlight.1
Dark green or brown when out of the water, because it closes up and droops, showing its darker outer body.1
Broad, flat top surface (oral disk) with no stripes, bands or other markings.1
Short, cone-shaped tentacles arranged in six or more rows around the mouth, with pointed or blunt tips.1

常被誤認為： Large giant green anemones can be confused with A. elegantissima or A. sola. Those two usually have pink-tipped tentacles and a striped oral disk, which the giant green anemone does not have.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？

Stinging cells called nematocysts in the tentacles release a paralysing venom that helps the anemone catch prey.1

牠對人有多危險？

對人的危險: 輕微跟蜜蜂螫差不多或更輕微。對人基本上無害。

牠害怕時會做什麼？

It uses its stinging cells in the tentacles to defend itself against predators.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

牠有多大？

牠有多長？

跟 9 塊玩具積木排成一排一樣長比花園蝸牛還慢

Giant green anemone 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？

一隻海馬 大約 0,0015 km/h (0 mph)

Giant green anemone 大約 0,01 km/h (0,01 mph)

一隻花園蝸牛 大約 0,05 km/h (0,03 mph)

值得知道

小知識

Tiny algae living inside its body help feed it through photosynthesis and add to its bright green colour.1

It can have a crown of tentacles up to 25 cm across.1

Anemones in caves and shady places have few or no algae and are usually less colourful.1

Its main predators include a leather seastar, two nudibranchs and several snails and sea spiders.1

給毒液專家

學名: Anthopleura xanthogrammica
類群: 水母和會螫人的海洋生物
家人: Actiniidae2
排序: Actiniaria
各大洲: 太平洋, 海洋
寶寶: Sperm and eggs are released into the water in late autumn and join outside the body. The young larvae float in the water until they settle in mussel beds.1
對人的危險: 1 / 5: 輕微3