Diving Logbook allows you to record 250 dives with plenty of information.  Space for qualifications, expeditions and a personal weights page.  5 dives per double page in a military logbook style to allow the owner to write as little or as much as they want while recording their dives.

The Shark Divers version has a diving with sharks guide, references and a place to record your shark sightings as well as the usal great  helpful references for diving.