Photo of the week

Photo of the week
2017-07-13 Mammoth Lakes CDKL6583 900px.jpg

Photo Blog


A Very Successful Partnership

Reef-building corals are a partnership of an animal and single-celled algae that form a partnership capable of forming structures of biological origin that can be seen from space. The animal harbors the algae in its tissue, providing protection and a source of fertilizer for the photosynthetic algae. The algae reciprocate by sharing excess materials produced by photosyntesis.

Filter Feeding for Fun and Profit

The odd-looking creatures in today’s photo are known as tunicates, an exclusively marine group of animals that take many forms.

Continental Divide

A continental divide is boundary or ridge that separates a continent’s river systems. River systems on opposite sides of the divide will feed into a distinct ocean basin or sea. Every continent on Earth, except Antarctica, has a continental divide, and sometimes more than one.