How Did This Ancient Marine Creature Break Amphibian Rules?

A Unique Adventure in the Depths of Fish

Natural history books have long told us a single, familiar story about the origins of amphibians: they are those courageous creatures that left the water long ago to take their first hesitant steps on land. Yet nature always keeps surprises up its sleeve that turn all established scientific rules and concepts upside down.

Gerrothorax Maritimus: The Exceptional Creature

About 237 million years ago, a unique marine creature named Gerrothorax maritimus lived. This creature belonged to the world of amphibians, but it made a bold and entirely unusual decision: it completely abandoned the land and refused to live in rivers or freshwater lakes, preferring to dive to the bottom of salty seas and oceans and spend its life there.

Protective Armor and Benthic Life

This ancient creature was distinguished by hard bony armor covering its body to protect it from the fierceness of the predators of its era, alongside a flat head and wide mouth that enabled it to capture its prey with exceptional skill on the dark seafloor. This unique amphibian managed to adapt completely to salinity and pressure, officially becoming the first amphibian in the annals of biology discovered to have lived its entire life without any need to access land or fresh water.

By: Hany Sallam

Source: sciencenews.org

Published by Hany Sallam

Hany Sallam, Founder and Editor-in-Chief of Scientific Magazine Ahram
An independent Arabic science magazine operating since 2008, dedicated to simplifying science, technology, space, natural phenomena and scientific stories for Arabic readers. The magazine includes sections such as “Zodiac Group” and “Stories and Tales”, alongside science topics that combine knowledge with a spirit of discovery. It operates independently and is not affiliated with Al-Ahram Press Foundation or any governmental body.