Dolphin shelling is one of the rarest hunting techniques ever documented in the wild, and this episode of Ocean Decoded Live breaks down brand-new drone footage of it in action. Shelling happens when a dolphin chases a fish into a large empty mollusk shell, usually a big sea snail or bailer shell, then lifts that shell to the surface and tips it just enough for the trapped fish to slide straight into its mouth. It's a technique that depends on the dolphin recognizing that pulling the shell out of the water removes the fish's only escape route, on top of the speed, smarts, and echolocation dolphins already use to hunt.

Researchers from the University of the Sunshine Coast, led by Dr. Alexis Levengood, filmed shelling in Hervey Bay, off the coast of Queensland, Australia, marking the first published record of the behaviour on Australia's east coast and the first time it has ever been captured on video. The footage shows an adult female dolphin performing the full shelling sequence, and then, minutes later, her calf picking up the same dropped shell and holding it the exact same way. Researchers say this offers the first potential evidence of a mother passing this specific tool-use skill directly to her calf, challenging the earlier assumption that dolphins mainly learn tool-use behaviours from their peers rather than their parents. The study was published in the journal Marine Mammal Science.

Beyond the novelty of the footage, this story matters because it adds to a small but growing body of evidence around social learning, and possibly culture, in dolphins. We also connect it back to how dolphins hunt more broadly, from using echolocation to track fish over long distances, to the very different, more forceful techniques some pods use on prey like octopus. If you want more stories like this, breaking down ocean news and research as it happens, that's exactly what we do every episode of Ocean Decoded Live.

Chapters:
0:00 Intro: What Is Dolphin Shelling?
0:59 New Study: First-Ever Video of Dolphins Using Shells to Catch Fish
1:35 How Dolphins Normally Hunt: Echolocation and Octopus-Hunting
2:36 Meet the Researchers: What "Shelling" Actually Looks Like
4:14 Watch the Footage: Mother Dolphin Shelling
5:56 Watch the Footage: Calf Picks Up the Same Shell
8:11 Why This Discovery Matters for Dolphin Culture

Takeaways:

Dolphin shelling is a hunting technique where a dolphin chases a fish into a large empty shell, lifts it to the surface, and tips it so the fish falls directly into its mouth.

Researchers from the University of the Sunshine Coast filmed shelling in Hervey Bay, Queensland, marking the first published record of the behaviour on Australia's east coast and the first time it has ever been captured on video.

The footage shows an adult female dolphin shelling, and minutes later, her calf picking up the same dropped shell and mimicking the behaviour.

Researchers say this offers the first potential evidence that dolphins can learn this specific tool-use skill directly from their mothers, rather than only from peers.

The discovery adds to a small but growing body of evidence for social learning, and possibly culture, among dolphins.

Dolphins also use echolocation to track fish over long distances, and different pods use very different hunting techniques depending on their environment and prey.

#OceanConservation #MarineBiology #SaveOurOceans #ProtectTheOcean #OceanAwareness #BluePlanet #ConservationMatters #ScienceForChange #SustainableOceans
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