Looking for a unique and fascinating addition to your marine aquarium? Look no further than Abdopus aculeatus, commonly known as the algae octopus! This small octopus species, measuring around 7 cm (3 inches) with arms up to 25 cm (10 inches) in length, is a master of camouflage, resembling a gastropod shell covered in algae. While it's often referred to as "the only land octopus" due to its ability to walk on beaches, A. aculeatus requires expert-level care and a minimum tank size of 120 gallons. With an aggressive temperament and a carnivorous diet, this Atlantic-origin octopus is not considered reef safe, making it a perfect addition to a species-only or predator tank. Add this captivating octopus to your marine aquarium and enjoy the mesmerizing presence of this unique and intriguing cephalopod!