http://www.theevolvingplanet.com/sponge-cell-aggregation-unique-ability/ http://www.theevolvingplanet.com/sponge-cell-aggregation-uni... Sponges have an intere

http://www.theevolvingplanet.com/sponge-cell-aggregation-unique-ability/ http://www.theevolvingplanet.com/sponge-cell-aggregation-uni... Sponges have an interesting ability to reaggregate themselves from cells. If you take a sponge and pass it through a sieve it can recombine. If you take a red sponge and blue sponge and pass them through the same sieve the cells "know" which they came from and where to go back to.