mercoledì 9 marzo 2016

NYT Science: The Hydra Gets a New Mouth With Every Meal

The Hydra Gets a New Mouth With Every Meal
By JOANNA KLEIN

Every time a hydra wants to eat, it rips a hole through the center of its body's outer layer. After dinner, it closes back up.

Published: March 10, 2016 at 06:00AM

via NYT Science http://ift.tt/1YxmFAN