New discovery reveals how diatoms capture CO2 so effectively | Tiny diatoms in the ocean are masters at capturing carbon dioxide (CO2). They fix up to 20 percent of the Earth’s CO2. A research team has discovered a protein shell in these algae that is necessary for efficient CO2 fixation.

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#Diatoms #CO2Capture #CarbonFixation #OceanScience #ClimateChange

Deep ocean clues to a million-year-old Ice Age puzzle revealed in new study, which provides fresh insights into the ocean’s role in climate during the Mid-Pleistocene Transition, an enigmatic interval of change in climate cycles that began about one million years ago.

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#DeepOcean #IceAge #ClimateChange #MidPleistocene #OceanScience

An unexpected ice collapse hints at worrying changes on the Antarctic coast. The coastal waters in the area have historically been quite cold, but small changes began around 2010. Ocean currents shifted, allowing water that was 0.6 degrees Celsius warmer than before to intrude toward the coastline

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#AntarcticChange #ClimateCrisis #OceanScience #IceCollapse #GlobalWarming

Decline of Antarctic Circumpolar Current due to polar ocean freshening

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#AntarcticCircumpolarCurrent #PolarOceanFreshening #ClimateChangeImpact #OceanScience #MarineEcosystems

🌊 Scientists warn of a "regime shift" in oceans, with seaweed blooms expanding by 13.4% annually in the tropical Atlantic and western Pacific over the past two decades, accelerating significantly after 2008.

🌍 This rapid growth is linked to global heating and excess nutrients from farming and pollution, potentially darkening ocean waters, altering ecosystems, and accelerating climate change.

🛰️ Using AI to analyze 1.2 million satellite images from 2003-2022, researchers found major seaweed blooms are becoming a global phenomenon, unlike before 2008.

#OceanScience #ClimateChange #MarineLife

Modern food chains on coral reefs off the coasts of the Dominican Republic and Panama are roughly 60 to 70 percent shorter than they were around 7,000 years ago, researchers report in Nature

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#coralreefs #oceanscience #reeffoodchains #marineecology #natureresearch

🌡️ Climate change intensifying marine heatwaves could lead to mass loss of a common sponge species, Rowella lancifera, around Aotearoa New Zealand, according to a new study.

💀 A mere 1°C increase above previous marine heatwave peaks could cause widespread death for Rowella lancifera, with lab tests showing a 95% mortality rate when exposed to temperatures just 1°C warmer than those recorded in the 2022 Fiordland heatwave.

🌊 This sponge species, along with potentially others, plays a vital role in marine ecosystems, covering up to 70% of rocky reefs, providing habitat, and recycling nutrients. Their loss could have significant ecosystem-wide effects.

#MarineHeatwaves #ClimateChange #OceanScience

A simple ocean-based model predicts a powerful El Niño for late 2026, with temperatures projected to be over 2°C above normal. By using only sea level and surface temperature data, the "Wyrtki-CSLIM" system achieves 15-month forecast accuracy comparable to complex AI and dynamical models.

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#ElNino #ClimateChange #OceanScience

New method turns ocean water into drinking water, without waste

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#Desalination #CleanWater #OceanScience

We improved NASA's SWOT ocean satellite measurements by 60% by showing that the "unpredictable" component of underwater tidal waves is actually predictable

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#OceanScience #SatelliteData #TidalForces

🐳 Sperm whale vocalizations evolve, creating distinct dialects similar to human languages, with isolated groups developing unique "vocal clans."

📊 A 20-year study of Mediterranean sperm whales reveals the Hellenic Trench population, near Greece, uses a faster version of a common vocal pattern compared to whales near the Balearic Islands.

🌍 This dialect evolution suggests a historical migration pattern, with whales arriving in the Mediterranean 20,000 years ago and colonizing from west to east.

#SpermWhales #MarineBiology #OceanScience

🐳 New research reveals sperm whales sleep vertically by releasing gas bubbles to control buoyancy and stay just below the ocean surface.

🐋 This mechanism, discovered off the Norwegian coast, helps counter their natural positive buoyancy due to spermaceti oil and prevents them from drifting upwards while resting.

🔬 Data from suction cup tags and 3-D movement simulations confirmed that bubble release allows for precise buoyancy regulation, even during sleep.

#SpermWhales #MarineBiology #OceanScience

Scientists discovered a new species of deep-sea siphonophore 6,500 feet below the surface near California's Channel Islands

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#DeepSea #Siphonophore #OceanScience

Scientists Find Parasites in Almost Every Fish From a Recent Tuna Haul – 96% Were Infected

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#OceanScience #ParasitesInFish #TunaResearch

🔬 A new study in the South China Sea reveals deep-sea mining can significantly disrupt microbes essential for nutrient cycling. Samples collected during a 2020 trial at 1,300 meters showed changes in genes related to nitrogen processes and sulfate reduction.

💧 Mining operations stirred up sediment, altering nutrient availability in waters up to 50 meters above the seafloor, particularly impacting nitrogen and silicate levels.

📉 Genes for nitrogen fixation and nitrite reduction decreased, while denitrification genes increased, indicating immediate disruption to the seafloor's microbial ecosystem.

#DeepSeaMining #OceanScience #EnvironmentalImpact