Why would a skeleton need to use a SCUBA tank?
A skeleton would use a SCUBA tank in order to venture underwater further than it would be able to using a snorkel or a holding its breath (free diving). With special equipment, an expert scuba-diver can descend to the world record depth of 308 meters. Of course, Scuba Skeleton is certainly not as skilled as the diver who set this record in 2001, John Bennett.