The best thing about Rottnest Island Diving & Scuba Diving in Perth, are the Fantastic dive sites that are located so close to our Perth City. Fremantle is the main Port of Perth City & Western Australia. This makes Fremantle the best place to jump on a boat and head over to Scuba Dive Rottnest Island.Rottnest Island is a limestone rock based Island, being of a soft porous composition. This soft rock coupled with the open Indian ocean currents, have created deep crevices, caverns and huge swim thru’s like you have never seen before. The soft corals are amazing, the fish life is truly diverse and the exploratory nature of the maze of caves, just sensational.Snorkelers are welcome on our day trips. Please note that Snorkelers will be taken to locations adjacent to the main dive site that is suitable for viewing from a snorkel depth. We have a tender available to take snorkelers a short distance to suitable snorkel sites so non-divers can enjoy their day out at Rottnest Island.