New research provides a comprehensive look into how wild octopuses use their arms in natural habitats. By analyzing arm movements across diverse environments,...
For centuries, naturalists have puzzled over what might constitute the head of starfish. When looking at a worm, or a fish, it’s clear which end is the...
Meraxes gigas, a huge meat-eating dinosaur that lived in Argentina some 94 million years ago, had short arms like Tyrannosaurus rex.
Meraxes gigas. Image...
