The Megalodon Rebreather is a compact, electronics-driven fully closed circuit constant PO2 design rebreather (eCCR) manufactured in the U.S. by Innerspace Systems Corporation. The Megalodon is noted for its highly modular and exceptionally durable construction. ISC resources ensure start to finish manufacturing consistency, making them an ISO 9001:2000 Registered Company.

The ISC Megalodon rebreather is available in several configurations of supply cylinders and buoyancy control systems. For buoyancy control the Megalodon can utilize the Dive Rite systems, or any backplate, harness and wing. Less cylinders, the entire unit can be carry-on luggage for most airlines.