Marine life - National Oceanic and Atmospheric Administration
2021年5月26日 · Our ocean, coasts, and estuaries are home to diverse living things. These organisms take many forms, from the tiniest single-celled plankton to the largest animal on Earth, the blue whale. Understanding the life cycles, habits, habitats, and inter-relationships of marine life contributes to our understanding of the planet as a whole. Hu
Coral reef ecosystems - National Oceanic and Atmospheric …
2019年2月1日 · The Northwest Hawaiian Island coral reefs, which are part of the Papahānaumokuākea National Marine Monument, provide an example of the diversity of life associated with shallow-water reef ecosystems. This area supports more than 7,000 species of fishes, invertebrates, plants, sea turtles, birds, and marine mammals.
Marine Life Education - National Oceanic and Atmospheric …
Marine mammals are classified into four different taxonomic groups: cetaceans (whales, dolphins, and porpoises), pinnipeds (seals, sea lions, and walruses), sirenians (manatees and dugongs), and marine fissipeds (polar bears and sea otters).
Marine mammals - National Oceanic and Atmospheric …
2019年2月1日 · Marine mammals are found in marine ecosystems around the globe. They are a diverse group of mammals with unique physical adaptations that allow them to thrive in the marine environment with extreme temperatures, depths, pressure, and darkness. Marine mammals are classified into four different taxonomic groups: cetaceans (whales, dolphins, and porpoises), …
Ocean pollution and marine debris | National Oceanic and …
2020年4月1日 · Harmful algal blooms (HABs), also known as “red tides,” grow rapidly and produce toxic effects that can affect marine life and sometimes even humans. Excess nutrients entering a body of water, either through natural or human …
Ocean acidification: A wake-up call in our waters
2016年4月1日 · Ocean acidification is a severe threat to shellfish, corals and other marine life because corrosive water can destroy their protective shells and skeletons, putting foo Ocean acidification, driven by an overload of CO2 in our seas, is literally causing a sea change, threatening the chemical balance of ocean and coastal waters worldwide.
Helping marine life in distress | National Oceanic and Atmospheric ...
2016年1月25日 · There are many things you can do to ensure the health of marine life, including viewing marine mammals and sea turtles responsibly, preventing marine debris from entering the ocean, and following responsible recreational fishing practices. These simple actions can protect marine life and help keep these animals thriving in the wild.
Life in an estuary - National Oceanic and Atmospheric …
2019年2月1日 · Estuaries filter out sediments and pollutants from rivers and streams before they flow into the ocean, providing cleaner waters for humans and marine life. However, coastal development, introduction of invasive species, overfishing, dams, and global climate change have led to a decline in the health of estuaries.
Oil spills - National Oceanic and Atmospheric Administration
2020年8月1日 · Oil is an ancient fossil fuel that we use to heat our homes, generate electricity, and power large sectors of our economy. But when oil accidentally spills into the ocean, it can cause big problems. Oil spills can harm sea creatures, ruin a day at the beach, and make seafood unsafe to eat. It takes sound science to clean up the oil, measure the impacts of pollution, and …
Ocean acidification - National Oceanic and Atmospheric …
2020年4月1日 · Ocean acidification is a problem that impacts the ocean ecosystem as well as commercial industries like oyster farms. This topic can be taught in conjunction with lessons about food webs and ecosystems, the environmental impacts of climate change and CO 2 emissions, and chemistry lessons concerning real-life applications. Students can explore ...