第 1095 号，共 1 402 张

Pacific sea nettle

Chrysaora fuscescens

名字的由来： The name 'nettle' refers to its sting, which is like that of the stinging nettle plant. Its genus name, Chrysaora, is Greek for 'he who has a golden armament', after the golden colour of its bell.1

只是会疼不要触摸会疼，但不会对你造成严重伤害。

水母和海中蜇人生物

会蜇人的触手吃：肉

对人的危险: 很疼可能真的很疼，但几乎从不严重。

The Pacific sea nettle is a large jellyfish with a golden-brown bell and long, trailing tentacles. It lives in the cool and temperate coastal waters of the northeastern Pacific Ocean, from southern British Columbia down to Mexico. Its sting is irritating, but it is rarely dangerous to people.1

生活在

Northeastern Pacific Ocean, from southern British Columbia and the US West Coast south to Baja California Sur, Mexico1

太平洋

首页

It lives in temperate to cooler coastal waters. Its numbers peak in late summer, and it has become very abundant off the coast of Oregon. Dense swarms can clog fishing nets and water intakes.1

长度

1 m (3.3 ft)1

最高速度

约 0.9 公里/小时（0.56 英里/小时）

游泳, 粗略估计

它吃什么？

It drift-feeds, hanging its stinging tentacles in the water like a large net to catch prey as it floats past. It eats zooplankton, crustaceans, salps, pelagic snails, small fish, fish eggs and larvae, and other jellyfish.1

Pacific sea nettle的照片 — Pacific sea nettle。照片：Ed Bierman。 CC BY 4.0, iNaturalist.

怎样认出它

Golden-brown bell with a reddish tint1
Bell usually less than 50 cm across1
Long, spiralling whitish oral arms1
24 undulating maroon tentacles that can trail up to 4.6 m behind it1

毒液之力

会蜇人的触手

一碰到东西，成千上万个小刺细胞就会发射。

它的毒液会造成什么？

When prey touches the tentacles, thousands of stinging cells (nematocysts) fire barbed stingers that inject venom. The venom contains proteins, including proteases and pore-forming toxins, which can disrupt cell membranes and tissues. The venom is effective against prey and humans, but is typically not lethal to people.1

它对人有多危险？

对人的危险: 很疼可能真的很疼，但几乎从不严重。

Its sting is often irritating and possibly mildly painful to people, but it is rarely dangerous. It is typically nonlethal to humans.1

它害怕时会做什么？

Its stinging tentacles are its main defence, although some animals, such as leatherback turtles, are not bothered by the sting.1

如果它蜇人

离开水面，取下所有触手（戴手套或用布）。
热带箱水母：在蜇伤处倒醋至少 30 秒，呼救，并准备好做心肺复苏。僧帽水母和大多数其他水母：先用海水冲洗，再用热水止痛。

一定先拨打你的急救电话（112、000、911）。这里是一般急救指导，不是医疗建议。急救基础

注意安全

永远不要摸、抓或逗弄野生动物，即使是很小的，即使它看起来在睡觉或已经死了。
给它留出空间。如果遇到它，保持冷静，慢慢后退，让它走自己的路。
如果被它蜇了：保持冷静，保持不动，拨打你的急救电话（112、000、911）或尽快去医院。记住它长什么样，拍张照片会有帮助。

它不是冲着你来的。它用毒液捕猎或保护自己，而且它更愿意躲起来。更多安全知识

在世界哪里？

非洲亚洲欧洲北美洲南美洲澳大利亚和大洋洲太平洋

它有多大？

它有多长？

和 2 只家猫鼻子接尾巴一样长和 6 根香蕉首尾相接一样长

Pacific sea nettle和你比起来有多大？

只是在你的浏览器里算一算。什么都不会被保存或发送到任何地方。

它有多快？

一只花园蜗牛 约 0.05 公里/小时 (0.03 mph)

Pacific sea nettle 约 0.9 公里/小时 (0.56 mph)

一个在游泳的人 约 3 公里/小时 (1.9 mph)

值得了解

事实

Small fish and crabs sometimes hide inside its bell, where they may feed on it.1

It uses light-sensing organs called ocelli to migrate from deep water up to the surface.1

It swims by jet propulsion, squeezing its bell to push water out, though it mostly floats.1

Its population may be growing because of nutrient pollution from human sources, which feeds algal blooms and the wider food chain.1

It is kept in many aquariums because of its bright colours and very long tentacles, and it is low-maintenance in captivity.1

给毒液专家

学名: Chrysaora fuscescens
类别: 水母和海中蜇人生物
家人: Pelagiidae2
排序: Semaeostomeae
大洲: 太平洋, 海洋
宝宝: Females hold fertilised eggs on their oral arms, where they grow into free-swimming larvae. The larvae settle, become polyps, and bud new polyps before developing into jellyfish. No number is given.1
对人的危险: 2 / 5: 很疼3