Trials & Tribulations, Part I: Planning for Gear Malfunctions
In the first of a new two-part series, Simon Pridmore describes a few equipment-related problems that divers commonly encounter and offers some tips on how to avoid or deal with them.
In the first of a new two-part series, Simon Pridmore describes a few equipment-related problems that divers commonly encounter and offers some tips on how to avoid or deal with them.
Off Brazil's eastern coast, Trindade Island plays host to a unique yet endangered land crab species, Johngarthia lagostoma. A study published in the journal Marine Ecology mapped out key conservation areas crucial for the species' survival, shedding light on its natural history and underlining the urgency for targeted preservation efforts.
On 3 May 2023, Davide Marchetti broke a world record in cave diving. He did the longest swim in a cave. Here is his story.
To be in the water with a southern right whale is a life-changing experience. Don Silcock shares his adventure in Argentina to photograph these majestic marine mammals, where he was lucky enough to see a rare white calf.
The ancient group of marine predators, which first appeared in the fossil record 440 million years ago, are facing a critical juncture in their existence. Though they have been resilient to other mass extinctions, the current one is caused by decades of industrial overfishing along with the growing demands of the shark fin trade. It has put those shark and ray species accessible to fisheries at risk of extinction, with far-reaching consequences for ocean ecosystems.
During an underwater cultural heritage mapping survey in Malta in 2007, researchers noticed an unusual feature in the sonar data. This anomaly stood out due to its size, shape, and the possibility of human-made objects. Further investigation confirmed the presence of an ancient 2,700-year-old shipwreck.
Over the past two decades, sharks have become emblematic of the world's threatened wildlife, leading to heightened scientific, regulatory and public scrutiny. However, a recent study challenges the effectiveness of these protective measures, revealing that global shark mortality has not only persisted but increased, despite increased regulations and finning bans.
This certification aims to recognise dedicated SDI Instructors and provide new professionals with a clear milestone to strive for.
One key objective is to acknowledge the accomplishments of SDI Instructors while encouraging the growth of the next generation of diving professionals. This rating celebrates their achievements and is designed for active SDI instructors committed to producing skilled divers.
South Korea has a lot to offer underwater photographers, recreational divers, and technical divers, from wall dives and artificial reefs to a variety of marine life and a wide array of nudibranchs, not to mention topside attractions to enjoy between dives, from beautiful nature parks and scenic trails to cultural events and fine dining. Drew Holder gives us an inside look.
In 1954, Warder C. Allee and Joshua C. Dickinson conducted an experiment on the smooth dogfish aimed at establishing dominance-subordination hierarchies in Chondrichthyans. This pioneering study, which lacked subsequent testing and analysis, has laid the groundwork for a persistent belief in rigid social structures among sharks. The dominance-subordination hierarchy, which is modelled on the social structure of the chicken, was proposed without convincing evidence in the context of Chondrichthyan vertebrates.
In a pivotal legal decision, the Court of Appeal in Sweden has revised the sentences of four men convicted in 2022 for offences against Sweden's heritage laws. These individuals were found guilty of plundering several wrecks off the coast of Öland, challenging the preservation of national heritage.
From 2013 to 2020, the convicted men retrieved a multitude of artefacts from shipwrecks near Öland, using some to adorn their homes. Dive logbook entries suggest that their activities may have begun as early as 1987.
The Shearwater Tern and Tern TX dive computers are designed to enhance convenience and versatility for sport divers.