Index for Information, facts and Pictures of Marine Invertebrates

Information about both Soft Corals and Hard Corals. Questions about Why Corals Change Color, What Do I Feed My Corals? and Reef System Lighting - What To Buy and Why.

From the Anemone Hermit Crab (Dardanus pedunculatus) to the Dwarf Blue Leg Hermit Crab (Clibanarius tricolor), to the Halloween Hermit Crab (Ciliopagurus strigatus) and more, these little scavengers are useful as well as popular in saltwater aquariums.

A picture gallery of Nudibranch and Sea Slug photos, most of which include scientific and common name, as well as other information with the images.

Facts and information about a number of Sea Anemones which are commonly found in saltwater aquariums. These Sea Anemone profiles include photos, captive care information, Clownfish which they host and more. Information is also available on Host Sea Anemone Survivability in a saltwater aquarium.

Families profiled include Cucumariidae (contains Sea Apples), Holothuriidae (species most commonly kept in aquariums), Stichopodidae (mostly warty or lumpy species), and Synaptidae (contains Medusa & Sea Worms).

A general overview about choosing urchins in this class for an aquarium with notes about the saltwater Pencil, Collector, and Rock Boring species, and a few cold water species.

A general overview about choosing snails in this class for an aquarium with notes about predatory genus Conus species to stay away from, and some of the good algae eating Nerita species, Astrea, Turbo, and Trocus Snails.

Classes in this phylum profiled include Asteroidea (Sea & Cushion Stars), Ophiuroidea (Brittle, Serpent & Basket Stars), and Crinoidea (Feather Stars & Sea Lilies).

While the Porcelain Anemone Crab and the Sally Lightfoot Crab are considered reasonably safe, many crabs, such as the 7-11 Crab are considered to be destructive and not be reef tank safe.