Alaska Stony Coral

About

The Alaska Stony Coral (Caryophyllia alaskensis) is a solitary cup coral native to the Pacific Ocean, with a range spanning the East Pacific and Indo-West Pacific regions. Including, as the name suggests, the cold northern waters off Alaska. In the wild it tends to colonize hard substrates at depth, growing as a single polyp enclosed in a calcified skeleton rather than forming the sprawling colonies most reef hobbyists are used to working with. That solitary growth form gives it a chunky, architectural look that stands apart from typical branching or plating corals. The single polyp can be quite full and fleshy when extended, showing off a ring of tentacles used to capture passing food particles. Because it hails from cooler, deeper environments, this is not a coral you can just drop into a standard tropical reef and forget about. It rewards keepers who pay close attention to stable conditions and targeted feeding rather than relying purely on photosynthesis. Moderate lighting and moderate flow suit it well, and its reef-safe status means it won't cause trouble for neighbors. This is a species best appreciated by intermediate-level hobbyists who enjoy the challenge of less conventional corals.