In March, an American couple from Philadelphia photographed what looked like a skull during a snorkeling expedition.
Nerd Cruise By Adam Rogers, Wired What 800 Nerds on a Cruise Ship Taught Me About Life, the Universe, and snorkeling.
1944, "airshaft for submarines," from German Schnorchel, from German navy slang Schnorchel "nose, snout," related to schnarchen "to snore" (see snore (n.)). So called from its resemblance to a nose and its noise when in use. The anglicized spelling first recorded 1949. The meaning "curved tube used by a swimmer to breathe under water" is first recorded 1951.