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Algae Photo Gallery

Whether you are trying to figure out what red, green, blue-green, brown or other type of alga is growing in your saltwater aquarium, browse this collection of photos and classification resources to view images and obtain indentification information on all forms of marine algae or seaweeds you want to identify.

Brown or Golden Diatom Algae Photos
Wondering what brown or golden diatom algae looks like? This page from your Guides pictures this type of algae in various stages of growth. Referred to as a microalgae, brown or golden algae is actually not an algae at all, but diatoms. What you are actually seeing in your tank are diatom skeletons, all linked together. It can appear as a simple...

Coralline Algae Photos
Photos of a number of different types of Coralline Algae which can be found in saltwater aquariums.

Red Slime Algae Photo Gallery
Red Slime Algae Photo Gallery. Red Slime Algae is actually not a "true" algae at all, but classified as a cyanobacteria. Often considered to be the evolutionary link between bacteria and algae, cyanobacteria are one of the oldest forms of life on earth and date back at least 3.5 billion years. These organisms produce oxygen as a byproduct of...

Brown Algae Photo Gallery
The Brown Algae Photo Gallery contains a number of algae species which are in the Division Heterokontophyta and found in the Hawaiian and Indo Pacific areas of the Pacific Ocean. Many of these alga are found on live rock in marine aquariums. Some of these alga are useful in aquariums for reducing nitrates and phosphate levels.

Green Algae Photos Gallery
The Green Algae Photos Gallery contains pictures of a number of species of green algae. Many of these macroalgae are used in the marine aquarium hobby to help reduce nitrates and phosphates.

Red Algae Photos Gallery
A photos gallery of Red Algae which can be found in the ocean and, quite often, in saltwater aquariums.

Green Hair Algae Photo
Green Hair Algae Photo by Steven Boss. The trapped bubbles you see are caused by gasses being released from the algae as it decomposes. This is usually a sign the algae is starting to die off.

Purple/Pink Coralline Algae Photo
This is a close up photo of Purple/Pink Coralline Aglae growing on the inside of a 55g FOWLR tank. In this particular tank, the heaviest growth of the Coralline Algae on the glass is found...

Red Slime Algae Photos
Red slime algae is actually not a "true" algae at all, but classified as a cyanobacteria. Most forms found in saltwater range in colors from blackish green to blue-green, orange-yellow to reddish-brown, and often appear as deep purple to fully black in color. These photos show what it may actually look like in your tank.

Hawaiian Seaweeds
From the Hawai'i Coral Reef Network site, this algae section is maintained by William H. Magruder and Jeffrey W. Hunt. It provides lots of photos with identification and charactertistic information about various green, blue-green, brown, and red seaweeds or marine algae found in Hawaiian waters.

Brown Algae Group Images
A nice collection of various Phaeophyta phylum or brown algae group Dictyota, Egregia, Eisenia, Hesperophycus, Padina, Pelagophycus, and Turbinaria species images from the National Museum of Natural History, Smithsonian Institution Algae pages.

Green Algae Group Images
A nice collection of various Chlorophyta phylum or green algae group Acetabularia, Caulerpa, Cymopolia, Halimeda, Rhipocephalus, Udotea, and Ulva species images from the National Museum of Natural History, Smithsonian Institution Algae pages.

Red Algae Group Images
A nice collection of various Rhodohyta phylum or red algae group Amphiroa, Halymenia, Hydrolithon, Peyssonnelia, Renouxia, Sebdenia, Trichogloea, and a few other species images from the National Museum of Natural History, Smithsonian Institution Algae pages.

Marine Plants of Hawai'i
From Brian Tissot's Hawai'i Coral Reef Network site, just click on any of the taxonomically grouped marine plants listed to obtain name, description, size, and habitat information about the various types of green, blue-green, brown, and red alga species of the Hawaiian Islands. Many photos are included.

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