Page "Wallace Line" Paragraph 3

The distance between Bali and Lombok is small, about.

The distributions of many bird species observe the line, since many birds do not cross even the smallest stretches of open ocean water.

Some bats have distributions that cross the line, but other mammals are generally limited to one side or the other ; an exception is the Crab-eating Macaque.

Other groups of plants and animals show differing patterns, but the overall pattern is striking and reasonably consistent.