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Thousands of seadragons are dying in Australia's toxic algal bloom

An algal bloom in South Australia has caused mass deaths of many species since March - now researchers warn that leafy and weedy seadragons could be facing the threat of extinction

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Humans

Ancient DNA reveals make-up of Roman Empire’s favourite sauce

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Fish rescue wins New Scientist Editors Award at Earth Photo 2025

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Fish rescue wins New Scientist Editors Award at Earth Photo 2025

Regulars

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The first teeth were sensory organs on the skin of ancient fish

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Giant megalodon sharks may have sparred with their jaws

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Conservationists are collecting semen from endangered wild sharks

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Wild cavefish can somehow survive with almost no sleep at all

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Life

Lights on surfboards and wetsuits could deter shark attacks

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The African killifish

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Some fish regrow injured fins and we’re closer to understanding how

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A shark survived being stabbed through the head by a swordfish

Life

A shark survived being stabbed through the head by a swordfish

Fishers in Albania caught a blue shark with an 18-centimetre fragment of swordfish bill embedded in its skull, in the first known case of a shark surviving such an injury

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These fish have evolved legs that can find and taste buried food

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Octopuses and fish hunt as a team to catch more prey

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Fish size themselves up in a mirror to decide if they can win a fight

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Sharks leap out of the water more often than you might think

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