第 1108 號，共 1 402 號

Egg-yolk jellyfish

Phacellophora camtschatica

名字的由來： It is named for the yellow centre of its body, which looks like an egg yolk.1

無害對人無害。不用擔心。

水母和會螫人的海洋生物

會螫人的觸手吃：肉

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。

The egg-yolk jellyfish is a very large jellyfish with a bright yellow centre that looks like a fried egg. It lives in cool seas across most of the world's oceans and is most common in the Northern Pacific. It is special because it can grow very large, and it is one of the few jellyfish that can survive in low-oxygen water.1

分布在

Cool waters of most of the world's oceans, most common in the Northern Pacific1

太平洋

首頁

It lives in cool open seas and drifts with the current. Its polyp stage attaches to rocks and piers, so people may come across the animal near piers and rocky shores.1

長度

59 cm (1,9 ft)1

最高速度

大約 1,3 km/h（0,81 mph）

游泳, 粗略估計

牠吃什麼？

It mainly eats gelatinous zooplankton and smaller jellyfish, along with fish and fish larvae. It catches prey with its tentacles, covers the food in mucus, and brings it to its mouth with its oral lobes.1

Egg-yolk jellyfish 的照片 — Egg-yolk jellyfish。照片：Michael Bear。 CC BY 4.0, iNaturalist.

怎麼認出牠

A yellow centre that looks like a broken egg yolk, surrounded by opaque white tissue1
A large bell, sometimes close to 60 cm across1
16 clusters of tentacles, each with up to a few dozen tentacles, and each tentacle up to 6 m long1
Broad, curtain-like oral arms1
Mostly drifts with the current, with only limited movement1

常被誤認為： The lion's mane jellyfish (Cyanea capillata) is sometimes confused with this species. The smaller Cotylorhiza tuberculata, which is found mainly in warmer water, especially in the Mediterranean Sea, is also called a fried egg jellyfish.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？

Its tentacles contain nematocysts, stinging cells that help it catch prey. Its sting is weak, which allows some small animals to ride on its bell and steal food from its arms and tentacles.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。

Its sting is weak.1

牠害怕時會做什麼？

Its tentacles contain nematocysts, which also help protect it from 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 3 根香蕉頭尾相接一樣長跟 18 塊玩具積木排成一排一樣長可以在 140 秒內游完一座大游泳池（50 公尺）

Egg-yolk 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)

Egg-yolk jellyfish 大約 1,3 km/h (0,81 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 tentacles can reach up to 6 m long, which is far longer than its bell.1

It has no gills, lungs or circulatory system. It takes in oxygen through its thin body surface instead.1

The giant deep-sea octopus Haliphron atlanticus clings to this jellyfish and eats its oral arms and stomach.1

It can survive in low-oxygen water for several hours at a time, and it sometimes dives into these zones during the day to avoid competition.1

Small crabs and an amphipod called Hyperia medusarum can live on its bell, and some feed on the parasites that infest the jellyfish.1

給毒液專家

學名: Phacellophora camtschatica
類群: 水母和會螫人的海洋生物
家人: Phacellophoridae2
排序: Semaeostomeae
各大洲: 太平洋, 海洋
寶寶: Eggs are fertilised and develop into swimming larvae called planulae. These settle on the seabed and grow into polyps, which later release young jellyfish called ephyrae.1
對人的危險: 1 / 5: 輕微3