Marine biology is the scientific discipline that investigates the biology of organisms inhabiting marine and brackish environments, encompassing molecular to ecosystem scales. It examines physiological, genetic, and behavioral adaptations to saline conditions, pressure, light regimes, and hydrodynamics, as well as population dynamics, trophic interactions, and biogeochemical roles of marine taxa from microbes to megafauna. Marine biologists employ field surveys, experimental manipulations, remote sensing, and omics-based approaches to quantify biodiversity patterns, primary production, nutrient cycling, and responses to natural and anthropogenic stressors, thereby informing ecosystem modeling, conservation strategies, and management of living marine resources.
A new study from NYU Abu Dhabi has found that small coral reef fish in the Arabian Gulf are facing a hidden but growing source of stress. When oxygen levels drop at night, a common occurrence on some of the world's hottest ...
Plants & Animals
1 hour ago
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The decline of California's kelp forests since the marine heat wave of 2013–17 has seen only minor recovery despite heroic efforts at restoration carried out by scientists, fishermen, coastal tribes, volunteer divers and ...
Plants & Animals
11 hours ago
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Species numbers alone do not fully capture how ecosystems are changing. In a global study, scientists analyzed long-term data from nearly 15,000 marine and freshwater fish communities. They found that fish food webs have ...
Plants & Animals
Feb 19, 2026
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Pygmy sperm whales (Kogia breviceps) are among the ocean's most enigmatic inhabitants—rarely seen and largely unstudied. They live far offshore in small groups, diving in search of squid and fish. Their quiet behavior and ...
Plants & Animals
Feb 19, 2026
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Common seal pups communicate in ways that are more similar to humans than previously thought. For instance, they take turns when "speaking" and their calls become increasingly alike when they spend time around each other. ...
Plants & Animals
Feb 17, 2026
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The Mediterranean Sea is rapidly changing under ongoing climate change. In the eastern basin, tropicalization is already well documented and driven by a combination of strong warming and the influx of tropical species through ...
Earth Sciences
Feb 15, 2026
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154
I grew up on the beaches of Pembrokeshire in south-west Wales. Visits to Tenby were my family's summer ritual: sand between our toes, paddling in rockpools, strawberry syrup on ice cream.
Environment
Feb 13, 2026
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Researchers have identified a new type of visual cell in deep-sea fish larvae that challenges a century of knowledge about vertebrate visual systems. Dr. Fabio Cortesi from The University of Queensland's School of the Environment ...
Ecology
Feb 11, 2026
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For decades, southern right whales have been celebrated as one of conservation's success stories.
Plants & Animals
Feb 11, 2026
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Nanoplastic exposure can impair the cognitive abilities of fish and could lead to significant impacts on marine species' ability to survive, according to a new international study.
Plants & Animals
Feb 11, 2026
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