Deliberations whether a person with asthma should be permitted to dive had been a hot topic worldwide, with some physicians holding contrasting views.
Polar bears, it seems, haven't given up the good fight just yet. Researchers recently observed these animal diving for longer and further than ever before - a hint that the species might still be developing new adaptations to support their unusual lifestyle.
The bends... any deep-water diver can tell you that this unusual 'decompression sickness' is no joke. It can cause serious and immediate damage, but can also leave organs permanently marred, cutting short a diver's career if not their life. Interestingly this condition should affect all mammals, not just humans; so why don't dolphins seem to suffer from it? A new study has the answer.
Spelunking and traditional cave diving are both a lot of fun. There is danger in scuba-diving flooded caves, but experienced explorers will tell you that the unique sights that can be found just beneath waves and stone are worth the risk. Such was the case for Ryan Dart, an Australian diver who made the paleontological discovery of a lifetime after stumbling upon a "treasure trove" of ancient and massive lemur bones.
It may be a little odd sounding, but tuna are very cold hearted creatures. No, they aren't unnecessarily cruel or stoic in life. Instead, they just can literally have cold hearts, with the organ somehow able to keep functioning even when deep-diving chills it to temperatures that would stop a human heart. Now researcher think they know how the fish is capable of this amazing feat.