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Warming Oceans may cause Mercury levels in fish to rise, claims new study

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Rising ocean surface temperatures caused by climate change could make fish accumulate more mercury, increasing the health risk to people who eat seafood, Dartmouth researchers and their colleagues report in a study in the journal PLOS ONE.

Until now, little has been known about how global warming may affect mercury bioaccumulation in marine life, and no previous study has demonstrated the effects using fish in both laboratory and field experiments. Mercury released into the air through industrial pollution can accumulate in streams and oceans and is turned into methylmercury in the water.

The researchers studied killifish under varying temperatures in the lab and in salt marsh pools in Maine. Fish in the marshes ate insects, worms and other natural food sources, while the lab fish were fed mercury-enriched food. Results showed the fish in warmer waters ate more but grew less and had higher methylmercury levels in their tissues, suggesting increases in their metabolic rate caused the increased uptake of the toxic metal.

 

Source: www.eurekalert.org

Photo: NOAA

Gear News

Love Camouflage with DYNAMICNORD

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freediving camouflage

Whether freediving or diving – everyone cuts a great figure in the new camouflage suits from DYNAMICNORD.

Thanks to the specially designed camouflage pattern in beautiful colours, the new two-piece
SFS-3 and SFS-5 apnea suits are perfect for freediving. The design gives freedivers the chance to observe underwater creatures from a shorter distance.

Due to the robust and high-quality Yamamoto neoprene and high-quality workmanship, the SFS-3 and SFS-5 are also suitable for scuba diving or other water sports.

freediving camouflage

As the names suggest, the suits are available in 3 or 5mm neoprene thickness. A combination of high-quality Yamamoto #39/45 Limestone neoprene is used. This material is characterised by its special lightness and flexibility. The suits are extremely flexible and comfortable to wear while providing maximum thermal insulation. The outer flex lamination supports the ultra 4-way stretch. Thanks to the open cells, the suits fit like a second skin.

The double-clip beaver tail is a convenient system for donning and doffing. Reinforced knees and rear ensure the necessary robustness. The vented hood allows excess air to escape.

The MC-15 freediving mask and SC-10 freediving snorkel with camouflage pattern as well as the AF-70 freediving fins are available in matching colours.

The camouflage SFS-3 and SFS-5 apnea suits are now available from DYNAMICNORD dealers in great colours and unisex sizes.

SFS-3

Recommended sales price: £264.00

Sizes unisex: S-2XL

Colours: camo/blue, camo/green

SFS-5

Recommended sales price: £353.00

Sizes unisex: S-2XL

Colours: camo/blue, camo/green

DYNAMICNORD – Your Outdoor Companion.

www.dynamicnord.com

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2-for-1 tickets now available for GO Diving Show

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go diving show

The GO Diving Show – the only consumer dive and travel show in the UK – returns to the NAEC Stoneleigh on 1-2 March 2025, just in time to kick off the new season, and early bird 2-for-1 tickets are now available, representing fantastic value for money.

Buy your ticket before 31 January 2025 for £17.50, and get your buddy, your spouse or your best friend in with you absolutely free! Or why not bring that non-diving mate along so they can see all of the wonders of the underwater world they are missing out on!

Effectively, the 2-for-1 offer equates to each ticket being just £8.75. And as always, this includes complimentary parking. And under-16s go free of charge, so bring the kids along for a fabulous family day out!

The Main Stage headline presenter is TV star, author and adventurer Steve Backshall, making a welcome return to the GO Diving Show after a few years away. He’ll be joined by NASA-trained NEEMO Aquanaut and Head of Scientific Research at DEEP Dawn Kernagis, fellow TV presenter, author and perennial favourite Monty Halls, and the dynamic duo of explorers Rannva Joermundsson and Maria Bollerup, who will be talking about their recent Expedition Buteng in Indonesia.

The dedicated UK Stage, Tech Stage, Photo Stage and Inspiration Stage are filling up with some familiar faces and a host of fresh speakers, and the show floor is getting fill to capacity with hundreds of exhibitors, including tour operators, resorts, dive centres, liveaboards, tourist boards, training agencies, manufacturers, retailers, and the ever-popular British Isles Experience.

You can take advantage of the Go Diving Show 2-for-1 ticket deal here.

godivingshow.com

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