Recent and related:<p><i>Entanglement between superconducting qubits and a tardigrade</i> - <a href="https://news.ycombinator.com/item?id=29580686" rel="nofollow">https://news.ycombinator.com/item?id=29580686</a> - Dec 2021 (111 comments)
based on my calculations the tardigrade would weight about 1e-8 kg or 1e-5 grams.
Carbon is 12 grams per mole which is 1e23, or 1e21 atoms per gram. So we would get 1e16 atoms in a tardigrade (give or take a few orders of magnitude).<p>Wouldn't quantum entanglement be quite impossible since it's a macroscopic object.