ID Information

Marine worms come in a vast array of sizes, shapes, colors, and desirability. Copious photos of hitchhikers on corals and live rock will help with identification of common worms in saltwater aquaria.

These sustainable snails reproduce extremely fast, stay small, graze over rocks, and fit into small nooks and crannies. They’re amazing!

With over 1500 species of green marine algae (Chlorophyta), only a few dozen are readily seen or available in the marine aquarium hobby. Check out some of the variety here!

From hairy to pointy and brown to neon orange, marine crabs vary spectacularly! Read on about the wide variety of marine crabs frequently encountered in the marine aquarium hobby.

“Berghia Nudibranchs” (Aeolidiella stephanieae) are elegant natural Aiptasia anemone predators.

Corals infected with A. corallina appeared bleached and as though something was eating them. They are only a little larger than 0.5 mm, so they’re extremely difficult to see due to size and color.

Although Montipora-Eating Nudibranch treatment is historically challenging, this article covers several available options.

Red bug parasites are tiny pods that only infest Acropora corals. Hopefully with easier treatments, red bugs will be a thing of the past.

A single dot, a squiggle of white, a floating orange ball – marine eggs come in all shapes, sizes, and colors! This page will help you with identification of marine eggs.

The sea spiders identified here are more interested in eating coral than eating pods in a reef tank, which makes them all the more scary!

There’s nothing like finding an unknown creature in your tank right before bed. Unfortunately, they were fluke parasites in my reef tank.

Identification of marine snails is crucial since they come in all shapes, sizes, colors, and function! These marine snails are some of the most frequently available or commonly seen.