Marine Creatures’ Migration Determined by Climate

necticut/AJ Hand.
Photo courtesy Audubon Connecticut/AJ Hand.

Marine ecologists have been grappling with a puzzler.

They had expected that, as climate change warms the oceans, most species would migrate toward the poles, fleeing the ever hotter waters near the equator and tracking the zone of their preferred water temperature as it shifts. But some studies revealed that some species seemed to migrate in the “wrong” direction.

Now, however, researchers have apparently solved the riddle: For the past four decades, marine species found along North America’s coasts mostly have followed cooler water, but that doesn’t always mean moving poleward.

Read more: Portland Press Herald