In 1947 Willard Libby perfected the archaeological dating method named for this isotope
(Jimmy of the Clue Crew reports from beside a mummy from Cairo, Egypt.) To remove all the moisture from a body, natron, a variety of this, was applied both inside & outside the corpse
Adjective for a substance that evaporates readily; pronounced differently, it follows "sal"
Shagreen, the dried skin of this meat eater, was once used as sandpaper
The largest crustacean is a Japanese species of this; it can measure 12 feet between its claws
In 1957 this undersea explorer became director of Monaco's Oceanographic Museum
Unlike most sea animals, in the sea horse this pair of sense organs can move independently of one another
(Jeff Probst, host of Survivor, delivers the clue from Palau.) The nearly extinct sea cow is found in the coastal waters of Palau, & even here, it is threatened by poaching
Meredith Gourdine's work on gas dispersion led to a way of clearing this from airport runways
Entomologist Thomas Eisner helped decipher the flash code used by the femmes fatales of these insects