Coloured scanning electron micrograph (SEM) of salt water pennate diatom frustule (skeleton) on the surface of a shell. This marine diatom is found in both brackish and salt water. Diatoms are a type of algae (Chromophyta, Bacillariophyceae). They consist of two valves, made of silica (hydrated silicon dioxide), which fit together like the top and bottom of a box. The exterior of the valves are often highly decorative, with pores, spikes or other types of projections. They are important alga in the marine food chain. Magnification: x745 when shortest axis printed at 25 millimetres. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / DENNIS KUNKEL MICROSCOPY |
Taille de l’image : | 3329 px × 2625 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |