第 1270 号，共 1 402 张

Black long-spined urchin

Diadema setosum

只是会疼不要触摸会疼，但不会对你造成严重伤害。

有毒的刺吃：植物

The black long-spined urchin is a sea urchin with very long, hollow spines. It lives on coral reefs, sand flats and seagrass beds across the Indo-Pacific, and it is one of the most widespread sea urchins in that region. Its spines can deliver a mild venom, so it is best to watch where you put your feet.1

生活在

Indo-Pacific region, from the Red Sea and east Africa to Australia and Japan; also found in the Mediterranean off Turkey after introduction1

印度洋, 太平洋, 红海, 珊瑚海, 菲律宾海, 阿拉伯海和波斯湾, 帝汶海和阿拉弗拉海, 孟加拉湾

首页

Commonly found on coral reefs, but also on sand flats and in seagrass beds. In Hong Kong it is found on rocky reefs, where it can be very numerous. People most often meet it by stepping on it in shallow water.1

长度

7 cm (2.8 in)1

体重

35 g到80 g (1.2 oz到2.8 oz)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 a prolific grazer that feeds on many kinds of algae common on tropical coral reefs.1

Black long-spined urchin的照片 — Black long-spined urchin。照片：Quartl。 CC BY-SA 4.0, iNaturalist.

怎样认出它

Black, near-spherical body (test) with extremely long, narrow, hollow spines, often black but sometimes brown-banded1
Five white spots on the body, which separate it from other Diadema species1
A bright orange ring around the periproctal cone (the 'anal cone'), which is often mistaken for an eye1
Bluish spots on the genital plates and a line of blue spots along the body1
Adults are no more than 70 mm across the body and about 40 mm high1

常被误认为： Other Diadema species are similar in shape and spines, but they lack the five white spots that mark this species. Its orange ring and blue spots also help to tell it apart.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？

The spines are hollow and contain a mild venom. The toxin mostly causes swelling and pain, which spreads gradually over several hours. The venom is not fatal to humans. The spines themselves are a bigger problem, because they are brittle and needle-like, break off in flesh and are difficult to remove.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。

The venom is only mild, and the species is not considered a serious threat to humans. Stepping on it can cause painful stings.1

它害怕时会做什么？

When threatened by a sudden impact or by spines snapping, it rapidly flips its body over and 'runs' on the tips of its longest spines.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红海珊瑚海菲律宾海阿拉伯海和波斯湾帝汶海和阿拉弗拉海孟加拉湾

它有多大？

它有多长？

它有多重？

和 80 个回形针一样重

和 2 块玩具积木排成一排一样长比花园蜗牛还慢

Black long-spined 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)

Black long-spined 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

It can move 760 mm in just 7 seconds by rolling and walking on the tips of its spines.1

It has no eye, but it has a diffuse light-sensing system that lets it detect light levels and the size and colour of objects.1

In 2006, living specimens were found off Turkey, making it the first invasive Erythrean sea urchin recorded in the Mediterranean.1

Goose barnacles of the genus Microlepas are known to live on it as parasites.1

It is considered one of the oldest living species in its genus, Diadema.1

谣言粉碎机

谣言： Black long-spined urchins are deadly and their stings can kill people.

真相： Their venom is mild and is not fatal to humans. The main problems are pain, swelling and spines that break off in the skin.1

给毒液专家

学名: Diadema setosum
类别: 海胆、海星和蠕虫
家人: Diadematidae2
排序: Diadematoida
大洲: 印度洋, 太平洋, 红海, 珊瑚海, 菲律宾海, 阿拉伯海和波斯湾, 帝汶海和阿拉弗拉海, 孟加拉湾, 海洋
宝宝: It is a broadcast spawner, releasing eggs and sperm into the water. Spawning happens seasonally or year-round depending on the location, and in some places it follows the full moon.1
对人的危险: 2 / 5: 很疼3