Subscribe to our Mailing Lists (It's free!)
Thursday, June 26, 2025
SAFETY4SEA
  • Home
  • Safety
    • All
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
    India

    Indian stakeholders warn ship retirement rule may cut 20,000 jobs

    Britannia: Follow safety protocols carefully

    Britannia: Follow safety protocols carefully

    Netherlands

    Fire breaks out aboard inland cargo vessel in the Netherlands

    seafarers

    Regulatory focus: New STCW requirements effective from 2026

  • SEAFiT
    • All
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
    Book Review: Building leaders the MMMA way

    Book Review: Feel grounded and think positive in 10 simple steps

    time

    Stay SEAFiT: Time is non-renewable – invest it wisely

    public speaking

    8 Key rules of Public Speaking

    social media

    Mindfulness and social media: M.I.N.D. your media

  • Green
    • All
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
    hydrogen norway

    New green hydrogen facility in Norway aims to launch in 2028

    green shipping recycling

    BIMCO: 16,000 ships could be recycled over the next 10 years

    towngas

    Towngas signs green methanol agreements

    shanghai port

    Shanghai completes world’s fist STS transfer of liquid carbon

  • Smart
    • All
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
    iaph cyber security

    IAPH releases cyber security guidelines for new port technologies

    germany latvia

    Latvia and Germany collaborate on smart port initiative

    imo autonomous shipping

    IMO in talks over autonomous shipping ahead of MSC 110

    germany latvia

    Smart vessel embarks on its first journey in China

  • Risk
    • All
    • CIC
    • Detentions
    • Fines
    • PSC Focus
    • Vetting
    oil theft nigeria

    Nigeria arrests 76 ships during two-year oil theft crackdown

    paris mou

    M/V Goldy Seven refused access to the Paris MoU

    detention

    Kerala High Court detains vessel in connection to previous incident

    ai remote inspections

    BV develops AI took to advance remote inspections

  • Others
    • All
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Shipping
    • Sustainability
    • Videos
    US Iran

    US contemplates easing sanctions against Iran to aid recovery

    USA

    Veson Nautical: US boasts 4th largest fleet valued at USD 116.5 bn

    ETF ocean pact

    ETF: Ensure ocean workers are not just consulted but involved

    container ship

    BIMCO Container Outlook: Stable demand despite uncertainties

  • Columns
    fuels

    VPS: Effect of FAME contamination on engine oils

    strait of Hormuz

    Could the Strait of Hormuz close amid an Iran–Israel war?

    LR: Good data is a crucial foundation for improving safety

    ABS Consulting: Make cyber risk part of the daily safety conversation

    Trending Tags

    • Anchor Your Health
    • Book Review
    • Career Paths
    • Human Performance
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Regulatory Update
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Training & Development
    • Wellness Corner
    • Wellness Tips
  • Events
  • Plus
No Result
View All Result
  • Home
  • Safety
    • All
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
    India

    Indian stakeholders warn ship retirement rule may cut 20,000 jobs

    Britannia: Follow safety protocols carefully

    Britannia: Follow safety protocols carefully

    Netherlands

    Fire breaks out aboard inland cargo vessel in the Netherlands

    seafarers

    Regulatory focus: New STCW requirements effective from 2026

  • SEAFiT
    • All
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
    Book Review: Building leaders the MMMA way

    Book Review: Feel grounded and think positive in 10 simple steps

    time

    Stay SEAFiT: Time is non-renewable – invest it wisely

    public speaking

    8 Key rules of Public Speaking

    social media

    Mindfulness and social media: M.I.N.D. your media

  • Green
    • All
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
    hydrogen norway

    New green hydrogen facility in Norway aims to launch in 2028

    green shipping recycling

    BIMCO: 16,000 ships could be recycled over the next 10 years

    towngas

    Towngas signs green methanol agreements

    shanghai port

    Shanghai completes world’s fist STS transfer of liquid carbon

  • Smart
    • All
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
    iaph cyber security

    IAPH releases cyber security guidelines for new port technologies

    germany latvia

    Latvia and Germany collaborate on smart port initiative

    imo autonomous shipping

    IMO in talks over autonomous shipping ahead of MSC 110

    germany latvia

    Smart vessel embarks on its first journey in China

  • Risk
    • All
    • CIC
    • Detentions
    • Fines
    • PSC Focus
    • Vetting
    oil theft nigeria

    Nigeria arrests 76 ships during two-year oil theft crackdown

    paris mou

    M/V Goldy Seven refused access to the Paris MoU

    detention

    Kerala High Court detains vessel in connection to previous incident

    ai remote inspections

    BV develops AI took to advance remote inspections

  • Others
    • All
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Shipping
    • Sustainability
    • Videos
    US Iran

    US contemplates easing sanctions against Iran to aid recovery

    USA

    Veson Nautical: US boasts 4th largest fleet valued at USD 116.5 bn

    ETF ocean pact

    ETF: Ensure ocean workers are not just consulted but involved

    container ship

    BIMCO Container Outlook: Stable demand despite uncertainties

  • Columns
    fuels

    VPS: Effect of FAME contamination on engine oils

    strait of Hormuz

    Could the Strait of Hormuz close amid an Iran–Israel war?

    LR: Good data is a crucial foundation for improving safety

    ABS Consulting: Make cyber risk part of the daily safety conversation

    Trending Tags

    • Anchor Your Health
    • Book Review
    • Career Paths
    • Human Performance
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Regulatory Update
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Training & Development
    • Wellness Corner
    • Wellness Tips
  • Events
  • Plus
No Result
View All Result
SAFETY4SEA

Marine life at risk because of ocean oxygen loss

by The Editorial Team
December 9, 2019
in Sustainability
ocean oxygen loss

Credit: IUCN

FacebookTwitterEmailLinkedin

An increasing phenomenon threatening the fish species and disrupting ecosystems in analysed in the newly launched “Ocean deoxygenation: Everyone’s problem” report, highlighting the dangers caused by the deoxygenation in the marine environment.

Specifically, the report, issued by the International Union for Conservation of Nature (IUCN), was released on Saturday at the COP25 UN Climate Change conference in Madrid.

It alerts that the world has to act faster to save the marine environment from the human activities. Working with 67 scientific experts from 51 institutes in 17 countries, what is presented here is the largest peer-reviewed study conducted so far on ocean deoxygenation.

Different analyses conclude that the global ocean oxygen content has decreased by 1-2% since the middle of the 20th century. Global warmingis expected to have contributed to this decrease, directly because the solubility of oxygen in warmer waters decreases, and indirectly through changes in the physical and biogeochemical dynamics.

The ocean deoxygenation has a serious impact on marine organisms as soon as conditions depart from full aeration, with downstream consequences on their activities and capacity to face natural contingencies.

RelatedNews

ETF: Ensure ocean workers are not just consulted but involved

Gard Crew Claims Report 2025: Troubling increase in crew fatalities

In addition, deoxygenation begins to change the norm of marine life (life-cycle), in favour of low-oxygen tolerant species, such as microbes, jellyfish and some squid, at the expense of low-oxygen sensitive ones, as many marine species, including most fish.

Marine life at risk because of ocean oxygen loss

According to the report, the loss of ocean is due to two overlying factors:

  1. eutrophication as a result of nutrient run-off from land and deposition of nitrogen from the burning of fossil fuels,
  2. the heating of ocean waters as a result of climate change, primarily causing a change in ventilation with the overlying atmosphere so that they hold less soluble oxygen, and compounded by reduced ocean mixing and changes in currents and wind patterns.

Ocean warming, ocean deoxygenation, and ocean acidification are major ‘stressors’ on marine systems and typically co-occur because they share a common cause.

It is also expected that the ocean will lose 3-4% of its oxygen inventory globally by 2100; Yet, the global average masks local changes that are predicted to be, for example, more severe in mid to high latitudes. Most of the losses are predicted to be concentrated in the upper 1,000 meters of the water column, which is richest in marine biodiversity.

There is good evidence that ocean temperature increases explain about 50% of oxygen loss in the upper 1000 m of the ocean, but there is less confidence of the knock-on effect on respiration – another factor to explain lowered oxygen

… the report highlights.

Marine life at risk because of ocean oxygen loss

It is predicted that there will be distinct regional differences in the intensity of oxygen loss as well as variations in ecological and biogeochemical impacts.

Perhaps the most familiar areas subject to low oxygen are the Baltic Sea and Black Sea. These are the world’s largest semi-enclosed low oxygen marine ecosystems.

While the deep basin of the Black Sea is naturally anoxic, the low oxygen conditions currently observed in the Baltic Sea have been caused by human activities and are the result of enhanced nutrient inputs from land, exacerbated by global warming.

This report on ocean deoxygenation is perhaps the ultimate wake-up call needed to dramatically raise our ambitions to tackle and immediately curb our emissions of carbon dioxide and other powerful greenhouse gases such as methane.

Dan Laffoley, Senior Advisor Marine Science and Conservation in IUCN’s Global Marine and Polar Programme and a co-editor of the report, commented that

We are now seeing increasingly low levels of dissolved oxygen across large areas of the open ocean. This is perhaps the ultimate wake-up call from the uncontrolled experiment humanity is unleashing on the world’s ocean as carbon emissions continue to increase.

Concluding, to explore more on ocean deoxygenation, click herebelow

Marine life at risk because of ocean oxygen loss

Marine life at risk because of ocean oxygen lossMarine life at risk because of ocean oxygen loss
Marine life at risk because of ocean oxygen lossMarine life at risk because of ocean oxygen loss
Tags: healthy oceansmarine environmentreportssustainability
Previous Post

Seychelles on track to tackle climate change

Next Post

Climate change heavily impacts ocean economy

Related News

GMF launches final Diversity@Sea report on Day of the Seafarer
Diversity in shipping

GMF launches final Diversity@Sea report on Day of the Seafarer

June 25, 2025
iaph cyber security
Cyber Security

IAPH releases cyber security guidelines for new port technologies

June 24, 2025
eu shipping
Fuels

Success of EU’s fuel policies depends on production standards

June 23, 2025
IMEC: Skilled and motivated seafarers are crucial to drive the industry’s decarbonisation efforts
Opinions

IMEC: Skilled and motivated seafarers are crucial to drive the industry’s decarbonisation efforts

June 23, 2025
CINS
Loss Prevention

CINS issues guidance on shipping lithium-ion cells in containers

June 23, 2025
COSCO X-press feeders
Shipping

COSCO & X-Press Feeders sign leasing & partnership agreements

June 20, 2025

Comments 1

  1. Novique says:
    4 years ago

    These marine lives has living the earth for how many years and they are the ones who will protect seas. But nowadays they need us to protect them with the nature, we will give them homes so that they can hatch or live they’re lives that they wanted.

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Explore more

No Result
View All Result
MARITIME EVENTS

Explore

  • Safety
  • SEAFiT
  • Green
  • Smart
  • Risk
  • Others
  • SAFETY4SEA Events
  • SAFETY4SEA Plus Subscription

Useful Links

  • About
  • Disclaimer
  • Editorial Policies
  • Advertising
  • Content Marketing
  • Contact

© 2025 SAFETY4SEA

No Result
View All Result
  • Safety
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
  • SEAFiT
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
  • Green
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
  • Smart
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
  • Risk
    • CIC
    • Detentions
    • Fines
    • PSC Case Studies
    • PSC Focus
    • Vetting
  • Others
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Shipping
    • Sustainability
    • Videos
  • Columns
    • Anchor Your Health
    • Book Review
    • Career Paths
    • Human Performance
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Opinions
    • Regulatory Update
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Tip of the day
    • Training & Development
    • Wellness Corner
    • Wellness Tips
  • SAFETY4SEA Events
  • SAFETY4SEA Plus Subscription

© 2025 SAFETY4SEA

Manage your privacy
We use technologies like cookies to store and/or access device information. We do this to improve browsing experience and to show (non-) personalized ads. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Manage options Manage services Manage {vendor_count} vendors Read more about these purposes
Manage options
{title} {title} {title}
No Result
View All Result
  • Safety
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
  • SEAFiT
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
  • Green
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
  • Smart
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
  • Risk
    • CIC
    • Detentions
    • Fines
    • PSC Case Studies
    • PSC Focus
    • Vetting
  • Others
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Shipping
    • Sustainability
    • Videos
  • Columns
    • Anchor Your Health
    • Book Review
    • Career Paths
    • Human Performance
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Opinions
    • Regulatory Update
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Tip of the day
    • Training & Development
    • Wellness Corner
    • Wellness Tips
  • SAFETY4SEA Events
  • SAFETY4SEA Plus Subscription

© 2025 SAFETY4SEA