第 1275 号，共 1 402 张

Collector urchin

Tripneustes gratilla

只是会疼会疼，但不会对你造成严重伤害。

蜇伤吃：植物

The collector urchin is a sea urchin, a spiny animal that lives on the seabed. It is found in warm seas across the Indo-Pacific, Hawaii, the Red Sea and The Bahamas. It is special because it grazes on seagrass and algae day and night, and it has been used in Hawaii to help control an invasive seaweed.1

生活在

Indo-Pacific, Hawaii, the Red Sea and The Bahamas1

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

Collector urchins live on the sea floor at depths of 2 to 30 metres. Mature urchins prefer open sea bottoms with some cover, while young urchins prefer rocky areas where they can hide.1

长度

10 cm到15 cm (3.9 in到5.9 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？

Collector urchins graze continually near the seabed, day and night, on algae, periphyton and seagrass. Most feed on seagrass fronds.1

Collector urchin的照片 — Collector urchin。照片：Philippe Bourjon。 CC BY-SA 4.0, iNaturalist.

怎样认出它

Usually dark, bluish-purple in colour, with white spines1
Some individuals have orange spines, or spines with orange tips1
Debris tends to collect on the body, which is how it got its name1
Reaches 10 to 15 cm in size1

毒液之力

蜇伤

毒液通过蜇刺出来。

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。

如果它蜇人

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？

和 5 块玩具积木排成一排一样长比花园蜗牛还慢

Collector 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)

Collector 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

In 2011, Hawaii placed 1,000 native collector urchins on a reef in Kaneohe Bay to help control an invasive seaweed called Kappaphycus, which had overrun local coral.1

Collector urchins feed heavily on seagrass between November and January, and one study found they ate up to or more than half of seagrass production in that period.1

Their name comes from the way debris collects on their bodies.1

Unlike many other sea urchins, collector urchins graze all day and all night.1

Their bright colours fade when the animal dies or is taken out of the ocean.1

They are prey for puffer fish, octopuses and humans.1