migration, n.All

Spiny lobsters migrate in groups of 50 or more, forming a conga line on the ocean floor

Why do birds fly south in the Fall?Because it's too far to walk

Spiders can use Earth Electric Field to fly hundreds of miles; They've been found 2.5 miles up in the air, and 1,000 miles out in the sea.

Dragonflies are migratory --- the globe skinner has the longest migration of any insect — 11,000 miles back and forth across the Indian Ocean.