This sea slug wants to be a fish so bad…

Most of us fantasize about being something we were not — Hermy wanted to be a dentist, everyone wanted to be like Mike and this sea slug wants to be a fish. Meet Phylliroe, a nudibranch that is about the size…

The Best Beginner Small-Polyp Stony Corals

Upon entering the world of small polyp stony corals (or SPS), many people ask the magic question, “Which types are best for beginners?” In my opinion the most beginner-friendly choices are found in the genera Montipora, Pocillopora, Seriatopora, and Stylophora.…

‘Blue Dragon’ sea slug washed ashore in Australia

The Blue Dragon sea slug is one of the reasons we love the underrated nudibranch so much. With bright and vivid colors, a surreal shape and deadly behavior, the Blue Dragon is certainly a sight to see. You might see…

Meet the tiniest “Sea Bunny” you ever did see

We’ve talked about hitchhiking coral crabs before, which are common on wild aquacultured corals, but boy were we surprised when we found the tiniest “Sea Bunny” hitchhiker crawling around our tank. A while back the internet kicked into overdrive when this video…

Our Tanks Are Lookin’ Good! But for Whom?

This is an easy question. Our tanks can be as good looking as we want. Of course, we can always throw more time and money into our tanks to make them look even better—but better looking to whom? And why?…

How to thoroughly quarantine your Corals

 With just about every endeavor success breeds new challenges. As I have already noted in several articles, with the improved success we have now achieved in keeping just about every type of coral and invertebrate long-term we are now seeing…

Common Coral Reef Pests and some ideas on how to remove them

In the early days of the hobby, we paid little attention to the many small animals that came in with our corals. We had such a difficult time keeping our corals alive that little thought was paid to the potential…

Coeloplana: Benthic ctenophores living right under your nose

Ctenophora is a phylum of marine animals most commonly referred to as comb jellies. You may have seen these in various documentaries, manifesting themselves as gelatinous geometric shapes fringed in movable cilia and psychedelic disco lights. This phylum is huge and…

Reef Primer, a new coral dip from Polyp Lab

Polyp Lab has a new coral dip called Reef Primer which is billed as being “premium” at treating all kinds of undesirables for the coral aquarium. Reef Primer is a blend of various salts which are said to be effective…

The Gorgon Worm: Gorgonorhynchus

Ribbon worms (Phylum Nemertea) are an unfamiliar group of invertebrates to aquarists and the general public alike. Despite their occasionally immense size, this unique phylum of animal life is seldom on anyone’s radar. Which is why it came as a…