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Seascapes: Contributors’ Picks

Photo by Matthew Meier: Scalefin and purple anthias over leather soft coral and a sea fan covered in pink and purple soft corals, Bligh Waters, Fiji. Gear: Nikon D810 camera, Nikon 16-35mm lens, Subal housing, Sea&Sea D3 strobes. Exposure: ISO 800, f/6.3, 1/125s

We asked our contributors to share their favorite photos that show underwater seascapes, and they came back with a range of wide-angle shots, featuring a variety of marine life large and small.

An egg-bearing female of Johngarthia lagostoma on the beach on Trindade Island
An egg-bearing female of Johngarthia lagostoma on the beach on Trindade Island

Critical conservation areas identified for endangered land crab

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.

drying shark fins
Demands of the shark fin trade

Global challenges and evolving threats: A comprehensive analysis of shark fishing

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.

Rare Phoenician wreck site in Malta

Due to its deep depth at 110m, the wreck site off Xlendi Bay at Gozo Island required innovative methods to be developed for deep-water archaeology.

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.

Shark dorsal fin with shark still attached.

Shark conservation: A critical reassessment needed

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.

SDI introduces new scuba instructor certification

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.

Bull shark

Reevaluating shark societies: Challenging the myth of dominance-subordination hierarchies

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.

Various types of glass, porcelain, wooden sculptures, coins, and a 17th century iron cannon are some of the hundreds of items the four men are accused of removing from the bottom of the Baltic Sea from various shipwrecks.

Baltic Sea shipwreck plunderers sentenced to prison

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.