After studying 611 fishes from different sites in Rowley Shoals and Scott Reefs in northwest Australia, scientists discovered that having fewer sharks around caused the fishes in the vicinity to develop smaller eyes and tails.
Cardiac issues have become a leading factor in diving fatalities, according to a study. Hence, older scuba divers have been advised to have regular fitness assessments with their doctors and cut down on factors that can increase one's risk of suffering a heart attack when diving.
Although it is mandatory to be screened for fitness and have one's dive skills certified prior to being issued a C-Card, such certification lasts a lifetime.
San Diego’s Wreck Alley is an area with intentionally sunken ships. One of the wrecks divers can find here is the HMCS Yukon, which was a Mackenzie-class destroyer that served in the Royal Canadian Navy (RCN) and later the Canadian Forces. She was named after the Yukon River that runs from British Columbia through the Yukon and into Alaska.
Over a number of years, the actions of fishermen and sea anglers have attracted the attention of marine scientists at the Dunstaffnage Marine Laboratory who quickly became aware of these fishers catching spurdogs in the Loch Etive area near Oban on the west coast of Scotland.
