This The Mentalist screencap contains
whirlpool.
There might also be
trockendock, grabdock, dry dock, graving dock, glory hole, lazaretto, ruhmloch, gloryhole, lazarett, bathyscaphe, bathyscaph, and bathyscape.
As the CBI investigates the murder of a young girl and the abduction of her twin sister, Lisbon suspects that Red John is trying to draw Jane into a trap.