sentences:  In 1987, a re-write of AS 2299 included scientific diving in the regulations even though the divers had been self-regulating under the Australian Marine Sciences Association (AMSA).At that time, the AMSA and the Australian Institute for Maritime Archaeology (AIMA) began a collaboration to draft a new standard for scientific diving.In the 1960s there were no regulations for scientific diving in Germany, but two fatal accidents in 1969 led to the implementation of guidelines for scientific diving based on the commercial diving guidelines.