Fragmentation (reproduction)
In biology, fragmentation is when a body breaks up into two or more parts and these parts grow into new individuals. Fragmentation can be seen in certain algae such as spirogyra.
Fragmentation (reproduction) Media
Corals can be multiplied in aquaria by attaching "frags" from a mother colony to a suitable substrate, such as a ceramic plug or a piece of live rock. This aquarium is designed specifically for growing coral colonies from frags.