PRESSURE OF BEING A BLOBFISH!
The Blobfish is a much maligned and mocked creature! Here we learn that we shouldn't be laughing as the science of pressure in liquids is behind its tragic and terminal final form as it is brought to the surface.
SCIENCE STORIES
MarkPrince
10/28/20262 min read
Picture this: You’re hanging out 4,000 meters under the sea, minding your own business, feeling like absolute royalty. The water is cold, the lighting is non-existent, and you’ve got approximately 400 times atmospheric pressure pressing in on you from every single direction.
Do you care? Not even a little bit. Because you, my friend, are a blobfish—the undisputed King of the Abyssal Zone!
Then... WHAM! A giant robotic claw snatches you up and drags you straight to the surface.
By the time you reach the boat, you don't look like a fierce deep-sea creature anymore. You look like a sad, gelatinous, melted face that’s had a exceptionally bad day/
So... What Just Happened? (The Science Bit!) Why did our high-pressure hero turn into an internet meme puddle? It all comes down to liquid pressure and density
1. Pressure Increases with Depth 📉
In physics, we know that pressure in liquids increases with depth. Why? Because the deeper you go, the more weight of water there is sitting on top of you! For every 10 meters you dive underwater, the pressure increases by 1 atmosphere (1 atm).
Down at 4,000 meters, that’s equivalent to having the weight of an elephant balanced on your thumbnail! 🐘
2. The Internal vs. External Equalizer ⚖️
Humans survive at 1 atm because our internal fluids push back out with 1 atm of force. But put a human at 4,000m, and our gas-filled lungs collapse instantly under the ambient water pressur
So how do blobfish do it?
No Air Spaces: They don't have lungs or swim bladders (air sacs fish use for buoyancy). Gas compresses easily under pressure—liquids don't!
Fluid Power: Their bodies are mostly water and low-density jelly-like tissue. The fluid pressure pushing out inside their cells perfectly matches the crushing water pressure pushing in from the ocean.
3. Decompression Catastrophe! 💥
When scientists yank the blobfish up to the surface, the surrounding water pressure drops rapidly (a process called decompression)
Without that massive external pressure pushing back against their soft, gel-like bodies, their cell structures expand and collapse under their own weight. They don't have strong bones or dense muscles to hold them up on land.
Down in the deep ocean, they actually look like a completely normal, structured fish! On land? Absolute pancake.
Quick KS3 Physics Recap 📝
Formula to remember: Liquid pressure depends on depth, density of the liquid, and gravitational field strength ($p = h \rho g$).
Gases vs. Liquids: Gases compress under pressure; liquids are virtually incompressible.
Balance of Forces: Deep-sea animals survive because their internal fluid pressure equals the external water pressure.
Next time someone calls a blobfish ugly, remind them: it's not ugly, it's just going through a high-pressure identity crisis! 😉
The Tragic Tale of the Blobfish: Under Pressure!
