Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...

Far beneath the waves, animals evolve in strange and surprising ways, often becoming much larger than their shallow-water relatives. This video explores why deep sea creatures grow to giant sizes, and ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

The blue whale is the largest animal known to have ever lived, reaching lengths of nearly 100 feet and weighing more than 300 ...

A hoodwinker sunfish, or Mola tecta, can weigh as much as 4,400 pounds and can grow up to nine feet long Charlotte Phillipp is a Weekend Writer-Reporter at PEOPLE. She has been working at PEOPLE since ...