EntityQ704147· pop 23· linked from 1,292 articlesMichael L. GernhardtSign in to saveNASA astronaut and manager of Environmental Physiology LaboratoryConnectionssurface supplied divingEntitydiving bellEntitydiving regulatorEntityDrägerwerkCompanydiving equipmentEntityprofessional divingEntitydiving medicineEntitydiving weighting systemEntitydiving helmetEntityunderwater divingEntitydiving suitEntitydiving cylinderEntitySCUBAEntitydiving chamberEntitybarotraumaEntitygas cylinderEntityfinswimmingEntitydiving buoyancy compensatorEntitydive computerEntitybreathing gasEntityCategories1956 birthsAmerican medical researchersAmerican underwater diversAquanautsLiving peopleNASA civilian astronautsPeople from Mansfield, OhioSpace Shuttle program astronautsSpacewalkersUniversity of Pennsylvania School of Engineering and Applied Science alumniVanderbilt University alumni