Assertion: elephant seal's population | /r/CapableOf | experience catastrophic event
Facets:
Source sentences:
text: When the effective breeding population reached a low point of 20-100 individuals, it underwent what is known as a population bottleneck, which occurs when a population experiences a catastrophic event (due to natural disaster, overharvesting, or habitat loss) that results in the survival of only a small number of individuals, who represent only a fraction of the genetic diversity that was present in the original population.