Toxic algae warning sign. Blue-green algae (or cyanobacteria) are photosynthetic micro-organisms that can be toxic to humans and fatal to animals. Photographed at Lee Valley Reservoirs,London,UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Brook, Robert |
Bildgröße: | 3862 px × 3803 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |