第 1274 号，共 1 402 张

Radiant sea urchin

Astropyga radiata

名字的由来： Astropyga comes from Greek words meaning star and anus, after the star-shaped pattern around its anus. Radiata is Latin for radiant, after its colours and spines.1

只是会疼不要触摸会疼，但不会对你造成严重伤害。

海胆、海星和蠕虫

有毒的刺吃：植物

对人的危险: 很疼可能真的很疼，但几乎从不严重。

The radiant sea urchin is a large, colourful sea urchin with long, spiky spines. It lives in warm, shallow seas across the Indo-Pacific, from the African coast to Hawaii and Australia. Its spines are venomous, so it is one to admire from a distance.1

生活在

Tropical Indo-Pacific, from the African coast to Hawaii and Australian waters1

印度洋, 太平洋, 珊瑚海, 菲律宾海, 帝汶海和阿拉弗拉海, 孟加拉湾

首页

It is often found in lagoons and bays where the seabed is sand, shingle or coral rubble. It usually lives at 10 to 30 metres deep, and can go down to about 70 metres. Sometimes many urchins gather together in one place.1

长度

20 cm (7.9 in)1

最高速度

约 0.02 公里/小时（0.01 英里/小时）

游泳, 粗略估计

它吃什么？

It is mostly active at night and feeds by grazing on algae. It has five powerful teeth in a mouth at the centre of its underside, known as an Aristotle's lantern.1

Radiant sea urchin的照片 — Radiant sea urchin。照片：Dan Schofield。 CC BY 4.0, iNaturalist.

怎样认出它

A large urchin, with a body (test) up to 20 cm across.1
Long, hollow spines up to 4 cm, in five vertical clusters.1
Between the clusters are bare, V-shaped red areas with lines of iridescent blue dots.1
The rest of the body and spines range from reddish brown to purple, dark brown or nearly black.1
Juveniles have spines with banding across them, and this sometimes stays into adulthood.1

常被误认为： It is often called the false fire urchin to tell it apart from the true fire urchin, Asthenosoma varium.1

毒液之力

有毒的刺

锋利的刺带着毒液。踩到或抓住它会很疼。

它的毒液会造成什么？

Its spines are venomous and can cause painful wounds. The spines are long and hollow, and the shorter of the two kinds are the venomous ones.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。

It is not deadly to humans, but its spines can cause painful wounds. Because it is large and brightly coloured, divers can usually see it, so injuries from stepping on one are fairly rare. On the 'Kings of Pain' pain index it scores 12 out of 30.1

它害怕时会做什么？

It is sensitive to light and can angle its spines towards an approaching threat.1

如果它的刺扎到你

把伤口泡在热水里，水温以不烫伤为限、尽量热，然后去看医生取出刺。不要自己去挖。

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。
如果它的刺扎到你：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印度洋珊瑚海菲律宾海帝汶海和阿拉弗拉海孟加拉湾

它有多大？

它有多长？

和 6 块玩具积木排成一排一样长比花园蜗牛还慢

Radiant sea urchin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？

一只海马 约 0.0015 公里/小时 (0 mph)

Radiant sea urchin 约 0.02 公里/小时 (0.01 mph)

一只花园蜗牛 约 0.05 公里/小时 (0.03 mph)

值得了解

事实

A crab called Dorippe frascone carries the urchin on its back.1

Several shrimps, crabs and small fish live among its spines for shelter.1

Its scientific name refers to a star-shaped pattern around its anus, not to the animal's shape as a whole.1

Its bright colours and size make it a favourite subject for underwater photographers and some expert fish-keepers.1

Its young larvae drift in the ocean as plankton before they settle on the seabed.1

给毒液专家

学名: Astropyga radiata
类别: 海胆、海星和蠕虫
家人: Diadematidae2
排序: Diadematoida
大洲: 印度洋, 太平洋, 珊瑚海, 菲律宾海, 帝汶海和阿拉弗拉海, 孟加拉湾, 海洋
宝宝: Males and females are separate. Eggs and sperm are released into the water, and the larvae drift as plankton through several stages before settling on the seabed and becoming juveniles.1
对人的危险: 2 / 5: 很疼3