Eggs of a Red-⁠eyed Treefrog

Description

This is a photo of tiny frog embryos that are visible inside a clutch of red-eyed treefrog eggs that stick to a leaf overhanging a little pond. The embryos can hatch prematurely when a predator attacks and they can propel themselves into the safety of a pond below. Snakes and wasps often prey on the eggs, which normally hatch after six to seven days; under attack, embryos can hatch up to thirty percent early. They tell a snake's attack from rain by the vibrations alone.