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Mola mola survives crushing depths without a swim bladder

Original: 🐟 ICYMI: The massive # Molamola lacks a swim bladder, relying on its gelatinous hypodermis to handle crushing pressure c

The ocean sunfish, or mola mola, manages without a swim bladder, the gas-filled organ most fish use to control buoyancy. Instead it relies on its thick, gelatinous hypodermis, which is less dense than seawater, to handle pressure changes as it hunts jellyfish deep in the ocean. The trait is highlighted in an episode of "The Nature of Things," hosted by Sarika Cullis-Suzuki and Anthony Morgan.

Why now: A science programme is showcasing the surprising biology of the ocean sunfish, prompting people to share the odd fact.

mola molaThe Nature of ThingsSarika Cullis-SuzukiAnthony Morgan

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Evidence

• 🐟 ICYMI: The massive # Molamola lacks a swim bladder, relying on its gelatinous hypodermis to handle crushing pressure changes while hunting # jellyfish deep in the # ocean . In an episode of "The Nature of Things," hosts Sarika Cullis-Suzuki and Anthony Morgan examine the… · tksst@fediscience.org · 21

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