Due to the constant jaw clenching and fluctuations in the atmospheric pressure underwater, divers may experience symptoms ranging from tooth, jaw and gum pain to loosened crowns and broken dental fillings. Recreational divers should consult their dentist before diving if they recently received dental care, said lead author Vinisha Ranna, BDS, a student in the UB School of Dental Medicine.
When Shearwater first introduced their new Perdix dive computer in December 2015, I was pretty excited.
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HMHS Britannic was the largest ship to sink during World War I. (Weighting in at almost 50,000-tons she was also the largest ship in the world).
Many argue she is one of the most beautiful, intact, well-preserved passenger liners accessible to divers. It is little wonder that these factors, and the story behind her construction and sinking continue to capture divers imagination.
This video shows a different type of agonistic behaviour, found in the blacktip reef shark. It was created to go with the article entitled Posturing Sharks, published in X-Ray Magazine #76
