An animal that can live without oxygen– no mitochondria, but a parasite that feeds off ready-made nutrients.
I used to be able to hold my breath for 3 minutes and swim 3 laps in the pool. But to NEVER need to breathe is unthinkable.
Our understanding of oxygen’s role in maintaining life is fundamentally changing.
“Scientists discovered the first animal that doesn’t need oxygen to live. It’s changing the definition of what an animal can be”