👉 Abyssobacteria are a group of bacteria that have been found in the deepest parts of the ocean, such as the Great Barrier Reef and the abyssal plains. They are characterized by their large size, which can reach up to 10 meters in diameter, and their ability to survive without oxygen for long periods of time. The term "abbyssobacteria" refers specifically to these deep-sea bacteria that have been found in these environments.