If hippopotamuses can't swim, how can some be living on islands?

Experts say that widely accepted models for the methods, patterns, and timing of the colonization and dispersal to several islands (e.g. Cyprus, Crete, and Madagascar) may need to be reconsidered.

"Although land bridge connections between these islands and the mainland are not currently supported by positive geological evidence, neither is there any contradictory evidence to exclude it," said Dr. Paul Mazza, author of a Lethaia article on the topic.