第 1260 号，共 1 402 张

Port Jackson shark

Heterodontus portusjacksoni

名字的由来： The genus name Heterodontus comes from Greek words meaning 'different' and 'tooth', which refers to its teeth.1

无害对人无害。不用担心。

有毒的鱼

有毒的刺吃：肉

对人的危险: 轻微像被蜜蜂蜇一下或更轻。对人基本无害。

The Port Jackson shark is a bottom-dwelling shark that lives in the cool coastal waters of southern Australia. It is active mostly at night, when it hunts shellfish, sea urchins and fish. It is harmless to people, though its spines have a reputation that is not confirmed.1

生活在

Temperate coastal waters of southern Australia, from southern Queensland to Tasmania and west to central Western Australia.1

印度洋, 南大洋, 南极洲

首页

It lives on or near the sea bottom, mostly over rocky ground, though it also uses sandy, muddy and seagrass areas. By day it rests in flat areas that offer shelter from currents, including caves and under rocky outcrops. It usually lives at depths of less than 100 metres.1

长度

1.6 m (5.4 ft)1

最高速度

约 22 公里/小时（14 英里/小时）

游泳, 粗略估计

它吃什么？

It eats hard-shelled molluscs, crustaceans, sea urchins and fish. It forages at night, when its prey is most active, and can suck in water and sand from the bottom to catch food. Black sea urchins are often eaten.1

Port Jackson shark的照片 — Port Jackson shark。照片：Mark Norman / Museum Victoria。 CC BY 3.0, Wikimedia Commons.

怎样认出它

Grey-brown body with dark brown, harness-like bands, including one that runs across the eyes.1
Large, blunt, flat head with raised ridges above the eyes.1
A spine at the front edge of each of its two dorsal fins, which are nearly equal in size.1
Front teeth are small and pointed, while back teeth are flat and blunt.1
Adults can grow up to 1.65 metres long.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。

它对人有多危险？

对人的危险: 轻微像被蜜蜂蜇一下或更轻。对人基本无害。

The shark poses no danger to humans. In October 2011, a man was bitten at Elwood Beach near Melbourne, but the bite did not pierce the skin and he was able to swim away while the shark was still attached to his calf.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（先用你自己的手试一试），泡 30 到 90 分钟。去看医生，尤其是被石头鱼和魟鱼伤到时。

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南极洲印度洋南大洋

它有多大？

它有多长？

和 3 只家猫鼻子接尾巴一样长和 9 根香蕉首尾相接一样长8.2 秒就能游完一个大泳池（50 米）

Port Jackson shark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？

一名奥运游泳选手 约 8 公里/小时 (5 mph)

Port Jackson shark 约 22 公里/小时 (14 mph)

一只全速游的海豚 约 35 公里/小时 (22 mph)

值得了解

事实

It can turn its stomach inside out and spit out unwanted contents.1

It can breathe while lying still on the bottom. It pumps water in through its first gill slit and out through the others, so it does not need to swim with its mouth open.1

Juveniles have individual personalities. Some are bolder than others when exploring new places, and they respond differently to stress.1

Juveniles can learn to link bubbles, lights or sounds with food, and they can learn by watching other sharks.1

Adults are often seen resting together in caves, but juveniles do not seem to be social.1

Each year it migrates south in summer and returns north to breed in winter.1

谣言粉碎机

谣言： Port Jackson sharks are dangerous to people.

真相： The shark poses no danger to humans. Its spines are rumoured to be venomous, but this has not been confirmed.1

给毒液专家

学名: Heterodontus portusjacksoni
类别: 有毒的鱼
家人: Heterodontidae2
排序: Heterodontiformes
大洲: 印度洋, 南大洋, 南极洲, 海洋
宝宝: It lays eggs rather than giving birth to live young. From late August to mid-November, the female lays pairs of eggs every 8 to 17 days, up to eight pairs in total, and the eggs take 10 to 11 months to hatch.1
它在野外过得怎么样: Least Concern (IUCN Red List)1
对人的危险: 1 / 5: 轻微3