One of my favorite institutions, the California Academy of Sciences in San Francisco, is holding a photography competition:
The Love Life photo competition returns for a second year with two new categories and many more prizes! Submit your loveliest photos of the California Academy of Sciences and the natural world for judging by top photo experts. Then vote for your favorite photos online to be entered in the People’s Choice Award. All winners will be announced at the March 1st Nightlife.
Most categories require photographs captured at the museum itself. One- for photography that encourages awareness of, or action for, the natural world- accepts submissions from anywhere.
The contest allows photographers to retain copyright, and the deadline is February 1st.