This Single Cell is the Size of a Tennis Ball!

追加: 2026-06-02

[00:00:00]Did you know there's a single cell the size of a tennis ball? Meet Valonia ventricosa, also called the sailor's eyeball. [music] This green bubble breaks every rule of biology. Most cells are microscopic, but this giant can grow 4 in wide. [music] It's literally the largest single cell on Earth. Scientists have been studying it for over a century because it's so weird. The crazy part? This massive cell has taught us more about how all cells work than almost any other organism. It might even hold secrets to stopping aging.