You are probably thinking of the testes.
the only organ that does not float is the brain
body
The only organ fully developed at birth in the human body is the brain.
The jars are called canopy jars and each one were charged with safekeeping a particular human organ (or organs). Duamutef - the jackal-headed god protected the stomach in his jar. Qebehsenuaf - the falcon-headed god protected the intestines in his jar. Hapi - the baboon-headed god protected the lungs in his jar. Imseti - the human-headed god protected the liver in his jar.
your brain is protected by your skull
Ventrally, only the muscles, fatty tissues and the omentum protect the stomach.
your brain is protected by your skull
The skin is thelargest organ and is outside of and therefore not protected by the skeletal system.
The brain.
kidneys
The brain is protected by the cranium, which is the skull bone that encases and supports it. The cranium acts as a protective barrier, shielding the brain from external injuries and providing structural stability.
heart