Jump to content

Davide DB

Super Moderators

  • Joined

  • Last visited

  • Country

    Italy
View Profile Find content

Posts posted by Davide DB

    Posted

    Join Flo as she follows the esteemed underwater photographer and marine biologist Laurent Ballesta on an exceptional scientific mission in the Philippines. For two weeks, Ballesta and his team conduct deep-sea dives between 80 and 130 meters in the Tubbataha Reef, a UNESCO World Heritage site known for its biodiversity but rarely explored at these depths. With the support of cutting-edge technology and meticulous planning, the team aims to document and study the reef’s unique ecosystems, searching for previously undocumented species and understanding the behavior and interactions of marine life in an untouched environment.

    The expedition also provides insight into the challenges of deep-sea research, including the use of pressurized diving habitats and specialized equipment to collect samples and data safely. This video offers a rare look into the world of marine science, demonstrating the significance of preserving pristine ecosystems while expanding our knowledge of the ocean's unexplored depths.

    Posted

    In the heart of the Mediterranean Sea, off the coast of Cap Corse, a group of scientists makes a surprising discovery: over a thousand perfectly round rings etched into the sandy seafloor, more than 100 meters deep. What are they? Who or what created them?

    To find out, diver and naturalist Laurent Ballesta leads an extraordinary scientific expedition. Using cutting-edge technology, he and his team live and work underwater for three weeks, exploring an unknown and fascinating environment. This documentary follows three years of research, stunning imagery, and unexpected discoveries that reveal a unique ecosystem and help us better understand our planet’s past. An exciting journey into the hidden secrets of the Mediterranean.

    • Like 2
    • Thanks 1

    I was discussing these articles and videos with an Italian marine biologist, and he was pointing out that unfortunately the phenomenon has been known for years among those in the field, and he turned over to me one of his scientific papers on the same topic, here in the Mediterranean in 2007

    Climate change is affecting marine environments all over the world but scientists' attention is mainly devoted to tropical areas. In the Mediterranean Sea, species with a cold affinity are decreasing very fast from 0 to 40 m depth, while warm water species increase. From 2000, several populations of the zoanthid Parazoanthus axinellae (Schmidt 1882) have been showing signs of suffering along the Ligurian coast. Here we report a three‐year monitoring, from June 2001 to September 2003, of a population of P. axinellae on the rocky cliff of the Portofino Promontory (Ligurian Sea). During this span of time the population, which covered an area of several square metres with a density of about 1 polyp cm−2, was severely reduced. In the meanwhile an encrusting sponge, Crambe crambe, rapidly colonized the free substrates abandoned by the zoanthid. Warm water and the massive proliferation of a cyanobacterium attributed to the genus Porphyrosiphon are hypothesized to be the main causes of this disease.

    https://www.tandfonline.com/doi/full/10.1080/11250000600911675#d1e357

    • Thanks 1

    1 hour ago, vkalia said:

    4). Condensation from humidity forming inside the housing and triggering the alarm: but is there enough humidity in the air inside a housing to do this? I wouldnt think so.

    I vote for this.

    I’ve never used a mirrorless housing in a tropical climate—only small GoPro cases, where I’d place a little moisture-absorbing pad inside. Still, every time I opened the case, the pad was visibly damp. It’s incredible how much humidity can build up in the tiny space left by a GoPro inside its housing.

    Secondly, I would check the section of the housing where the port attaches.

    P.S.

    Do you mind if I slightly edit your title to reflect the actual problem/content?

    • Like 2

    1 hour ago, bghazzal said:

    NOOA Current Global Bleaching: Status Update & Data Submission - Updated: April 21, 2025

    https://www.coralreefwatch.noaa.gov/satellite/research/coral_bleaching_report.php

    On April 15, 2024, NOAA (in partnership with the International Coral Reef Initiative) confirmed the world is in the midst of its 4th global coral bleaching event. From 1 January 2023 to 20 April 2025, bleaching-level heat stress has impacted 83.7% of the world’s coral reef area and mass coral bleaching has been documented in at least 83 countries and territories.

    The ongoing global coral bleaching event is the biggest to date. The previous record was during the 3rd global coral bleaching event, which occurred from 2014-2017, when 68.2% of the world's reef area experienced bleaching-level heat stress. The 1st and 2nd global coral bleaching events occurred in 1998 and 2010, respectively.

    Animation of NOAA CRW's Daily 5km Bleaching Alert Area Maximum product, for the period January 1, 2023 - April 20, 2025
    animation_ct5km_baa5-max-7d_v3.1_tropics

    https://eu.usatoday.com/story/news/politics/2025/03/12/noaa-layoffs-trump-federal-government-cuts/82305736007/#:~:text=NOAA%20lays%20off%201%2C000%20employees%20as%20President%20Trump%20escalates%20federal%20cuts

    • Thanks 1

    Posted

    Insta360 has officially announced the launch of the X5, its most advanced 360-degree action camera to date. Introduced on April 22, 2025, the X5 features upgraded 1/1.28-inch sensors and a high-speed Triple AI Chip system, which together enable video capture at 8K resolution and 30 frames per second. A new mode called PureVideo uses AI algorithms to enhance low-light performance, offering improved noise reduction and dynamic range.

    In terms of hardware, the X5 includes user-replaceable lenses made from highly durable glass, making field repairs easier and reducing waste. Other design updates include a built-in wind guard for better audio quality, increased battery life—up to 185 minutes depending on settings—and an IP68 rating, meaning it is water-resistant up to 15 meters (49 feet).

    The camera also introduces InstaFrame Mode, which captures both 360-degree and standard flat video simultaneously.

    The Insta360 X5 is available starting at $549.99 for the standard package. A more complete bundle, including a selfie stick and extra battery, is priced at $659.99. Additional accessories such as lens replacement kits and spare batteries are also available separately.

    https://www.insta360.com/product/insta360-x5

    • Like 1

    Other bad news for camera market. ATM we are getting info from rumors sites:

    Fuji Rumors
    No image preview

    Fujifilm to Suspend Orders for GFX100RF, X100VI and X-M5...

    I have received this message from an anonymous source (THANKS), telling me that on Friday April 11, Fujifilm contacted retailers about the suspension of orders for the following cameras: Fujifilm G...

    • Sad 1

    3 hours ago, Byron said:

    So, this is an MFO and a Kraken plus 6 stacked. The real question is why would you want to stack them though? The SMC and the MFO are different, for different purposes. The only reason I stacked these is I couldn't get the ring off my Kraken to put it into a bayonet holder so the only work around was the screw it into the MFO .... However it all works fine and dandy 

    STACK.jpg

     

     

    Beautiful image! It’s impossible to know whether it would’ve turned out the same without adding the MFO.

     

    My question is, does the Black Mojo focus range adjustment also happen with M43 lenses?

    Edit: my bad, I've just discovered that Nauticam updated its M43 N85 port chart with MFO: https://drive.google.com/file/d/180prPNEGE2nAfoxEYAq9FLkWj6XOiV-M/view

     

     

    • Haha 1

    1 hour ago, Chris Ross said:

    it's already more expensive in the USA for Nauticam at least on an AUD basis compared to buying  here in AU.  Backscatter price is $USD 5272, which $AUD 8481.  The local Nauticam dealer lists it for $AUD7332.

     

    IIRC in the big tariff mess, there were already previous tariffs applied to China (and thus Hon Kong). That is why the White House specified that the current tariffs are at 145%.

    • Sad 1

    Posted

    The Bajo people of Southeast Asia have a deep connection with the marine environment. As descendants of sea nomads, they traditionally roamed the ocean to fish and trade, but today, most live in coastal villages or on stilts over the water.

     

    This short film focuses on the Bajo of Southeast Sulawesi, Indonesia, highlighting their strong bond with the sea and the challenges small-scale fishing communities face. Impacted by overfishing, pollution, and biodiversity loss, they are struggling to survive.

    In response, some have resorted to harmful fishing methods, putting the health of the reefs at risk and leaving their future in jeopardy.

     

    www.ritahencke.com/film/salt-in-their-veins

    www.ritahencke.com/photography/salt-in-their-veins

     

     

    • Like 2
    • Thanks 1

    Posted

    The video portrays a profound message about the significance of the ocean in relation to Earth’s health and the future of humanity. Through personal reflections spanning nearly a century, David Attemborough emphasizes the ocean’s vital role as our planet’s life support system and its capacity to combat climate change. Despite its current poor health, there’s a strong sense of hope: the ocean’s ability to recover more rapidly than previously thought.

    The narrative implores humanity to take action to preserve the seas, asserting that if we save the ocean, we ultimately save our world. This story is not just about acknowledging the critical state of the oceans, but also about understanding the immense potential for restoration and rejuvenation, underscoring a collective responsibility for the future of our planet.

     

    OCEAN WITH DAVID ATTENBOROUGH. Global Cinema Event from May 8
    Tickets on sale now: https://www.oceanfilm.net

     

     

     

    • Like 4

Important Information

Terms of Use Privacy Policy Guidelines We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.