Aquanauts rhymes with:
astronaut's, huguenots, astronaut's, huguenots, aeroflot's, afterthoughts, apricots, astronaut's, boycotts, crackpots, croat's, croats, ersatz, feedlots, gunshots, hot-shots, hotshots, huguenots, jackpots, kilowatts, mascots, megawatts, ocelot's, oviatt's, potshots, robot's, robots, slingshots, snapshots, sunspots
Aquanauts sounds like:
accents, accentuates, accommodates, account's, accounts, acmat's, agematsu, agendas, agent's, agents, agents', ascends, asmodeus, assessments, assignment's, assignments, axiomatic