Caption: Marine centric diatom frustule (Triceratium dubium). This images is a close-up view of the delicate silica skeleton of a centric diatom. This species was found in the Pacific Ocean near the sea shore (Oahu, Hawaii). Diatoms are microscopic, unicellular algae that are abundant in marine and fresh water. There are many phytoplankton diatom genera that are an important part of the food chain. The body or frustule is composed of two halves which fit tightly together. The cell walls contain silica dioxide (glass) which are preserved in deposits known as diatomaceous earth. Once hardened into rock it is called diatomite and can be used for many purposes including filters, fillers and abrasives.
Magnification*: x2,000
Type: SEM
Copyright 2009 Dennis Kunkel Microscopy, Inc.
Keywords: 23493,algae,diatom,marine,frustule,SEM,Triceratium dubium,Triceratiales,Bacillariophyta,Triceratium,Triceratiaceae,centric,Coscinodiscineae,Bacillariophyceae,Heterokonta,diatom frustule,diatom frustules,alga,aquatic,diatoms,eukaryote,Hawaii,phytoplankton,plankton,salt water,sea water,silica,silica skeleton,siliceous frustule,Heterokontophyta,eukaryotes,eukaryotic,diatom phytoplankton,protist,protists,single cell,marine planton,salt water phytoplankton,salt water plankton,saltwater phytoplankton,saltwater plankton,sea water phytoplankton,sea water plankton,seawater phytoplankton,seawater plankton,marine diatom,marine diatoms,alga photosynthesis,algae photosynthesis,marine photosynthesis,diatomite,marine phytoplankton,diatomaceous earth,Hawaii diatom,Hawaii marine diatom,Hawaiian marine diatom,Hawaiian marine diatoms,centric diatom,centric diatom frustule,centric diatom frustules,centric diatoms,silica dioxide,06.01.09