![Nyx on Twitter: "@NoName_xx_ahf Sea urchins like to put rocks and shells on their heads, to protect them from predators and the sun. So an aquarium 3D-printed hats for them, and they Nyx on Twitter: "@NoName_xx_ahf Sea urchins like to put rocks and shells on their heads, to protect them from predators and the sun. So an aquarium 3D-printed hats for them, and they](https://pbs.twimg.com/media/Fbctj3zUsAAci4O.jpg)
Nyx on Twitter: "@NoName_xx_ahf Sea urchins like to put rocks and shells on their heads, to protect them from predators and the sun. So an aquarium 3D-printed hats for them, and they
![OC) Sorry if this has ever been posted but I just found out that sea urchins like to wear stuff on their heads so aquariums have been 3D printing hats for them OC) Sorry if this has ever been posted but I just found out that sea urchins like to wear stuff on their heads so aquariums have been 3D printing hats for them](https://preview.redd.it/sorry-if-this-has-ever-been-posted-but-i-just-found-out-v0-qg0lq7eue2n91.jpg?width=640&crop=smart&auto=webp&s=f1cf6b393d82af410d8064d69079831a43a4d611)
OC) Sorry if this has ever been posted but I just found out that sea urchins like to wear stuff on their heads so aquariums have been 3D printing hats for them
![Sea urchin hats (Size MEDIUM) – baseball, pirate, skipper, captan, viking, Green Ears – Custom 3D Printing & Laser Solutions Sea urchin hats (Size MEDIUM) – baseball, pirate, skipper, captan, viking, Green Ears – Custom 3D Printing & Laser Solutions](https://www.leafgreensolutions.com/wp-content/uploads/2021/12/61bddba0b9b39d35426c19c0.jpg)
Sea urchin hats (Size MEDIUM) – baseball, pirate, skipper, captan, viking, Green Ears – Custom 3D Printing & Laser Solutions
![PHOTOS: EPCOT Sea Creatures Celebrate 50 Years of Walt Disney World With 3D- Printed Ear Hats - WDW News Today PHOTOS: EPCOT Sea Creatures Celebrate 50 Years of Walt Disney World With 3D- Printed Ear Hats - WDW News Today](https://media.wdwnt.com/2021/10/drmarkatdisney-245600887_547450806317224_7516507700576827342_n-6693234.jpg)
PHOTOS: EPCOT Sea Creatures Celebrate 50 Years of Walt Disney World With 3D- Printed Ear Hats - WDW News Today
![PHOTOS: EPCOT Sea Creatures Celebrate 50 Years of Walt Disney World With 3D- Printed Ear Hats - WDW News Today PHOTOS: EPCOT Sea Creatures Celebrate 50 Years of Walt Disney World With 3D- Printed Ear Hats - WDW News Today](https://media.wdwnt.com/2021/10/drmarkatdisney-245540637_332579311960749_8058701231104120684_n-9508490.jpg)