If you push a sponge through a sieve, it will reassemble on the other side. This is the only plant or animal that can do this.
https://www.pbslearningmedia.org/re...onges-time-lapse-of-sponge-cells-recombining/
https://www.pbslearningmedia.org/re...onges-time-lapse-of-sponge-cells-recombining/