A reader requested a hi-res shot of a mangrove, so I had a look around. On each of these sites there are at least a few — and often many — more images to choose from.
Here are a few from the US Fish & Wildlife Service’s National Digital Library:
WO3690 Black Mangrove Swamp in Texas
Volume1\5CD6962D-A3E0-D2A3-F39EC675A2151B94.jpg (Full Resolution Volume and Filename)