Answer: sealab

AnswerCrossword Clue
SEALABMan-made habitat
SEALABNaval habitat
SEALABAquanaut's place.
SEALABNASA specialty.
SEALABUnderwater workshop.
SEALABWatery workshop.
SEALABOcean research unit
SEALABOcean-study craft
SEALABMarine science center
SEALABOcean study ship
SEALABNavy structure for undersea research
SEALABTest site for an aquanaut
SEALABAquanaut's place
SEALABExperimental underwater habitat
SEALABExperimental Navy underwater habitat
SEALABOld Navy work site
SEALABHabitat for an aquanaut
SEALABU.S. Navy experimental habitat
SEALABAquanauts' haunt
SEALABAquanaut's workplace, perhaps
SEALABUnderwater experimentation station
SEALABNaval underwater workshop
SEALABHigh-pressure habitat
SEALABAquanaut's facility
SEALABAquanauts' apartment?
SEALABUnderwater naval habitat
SEALAB1960s underwater habitat
SEALABUnderwater test site
SEALABAquanauts' home
SEALABAquanaut workplace
SEALABHabitat for aquanauts
SEALABAquanauts' locale
SEALABUnderwater habitat created by the U.S. Navy
SEALABU.S. Navy underwater habitat
SEALABAquanaut's habitat
SEALABOcean science site
SEALABAquanaut's workplace
SEALABOceanographer's workplace
SEALABAquanaut's base
SEALABAquanaut's home