Dolphins Use Seashells as Fishing Tools in Australia

Dolphins just proved they're even smarter than we thought, and the underwater footage is absolutely stunning.

Scientists in Australia documented bottlenose dolphins chasing fish into empty seashells, then carrying the shells to the surface and tipping their prey straight into their mouths. This marks the first time researchers captured video evidence of dolphins using tools to hunt, and it suggests the behavior may be far more widespread than anyone realized.

The breakthrough came when researchers studying dolphins along Australia's east coast spotted two adult females perfecting this fishing technique. On July 6, 2025, a dolphin named Stevie Nicks surfaced with a bailer shell held above the water near Queensland's Great Sandy Marine Park. Months later on October 1, another female named Maserati appeared with a shell containing what looked like a catch, though the fish escaped before she could eat it.

Here's where it gets really exciting. Maserati's young calf, Bentley, watched his mother's technique and tried it himself just moments later. He surfaced with the same shell, possibly containing a lizardfish, showing how dolphins may teach their young to use tools just like humans do.

Scientists call this hunting method "shelling," and tour guides in the area had reported seeing it since 2019. But without video documentation, researchers couldn't confirm how common it was or how dolphins learned the behavior.

The discovery becomes even more fascinating when you consider location. Shelling was previously only documented in Shark Bay on Australia's west coast, thousands of miles away from Queensland. Finding the exact same technique on opposite sides of the continent suggests dolphins invented this clever fishing method independently in different places.

Why This Inspires

This discovery joins dolphins in an exclusive club of tool users once thought to be uniquely human. Chimpanzees crack nuts with rocks, elephants swat flies with branches, and crows bend twigs into hooks to catch prey. But dolphins are doing something special: they're using their ocean environment as a toolkit and passing that knowledge down through families.

Lead researcher Alexis Levengood from the University of the Sunshine Coast believes shelling might be happening in waters around the world, just waiting to be documented. The behavior could help dolphins reduce competition for food by mastering a skill others haven't learned yet, or it might simply be the smartest way to catch a quick meal.

The underwater world still holds countless secrets about how intelligent animals adapt and thrive in their environments.