Definition
A coelacanth is a rare order of lobe-finned fish, remarkable for being a 'living fossil' – almost unchanged for millions of years. Thought to be extinct, a live one was discovered in 1938! They live in deep ocean environments and have unique features like lobed fins and a notochord. Think of them as time capsules from the past. They provide a unique glimpse into the evolution of vertebrates. They are truly ancient!