Animals, News, Oceanography

Obama proclaims world’s largest Marine Park

MAGGIE SMITH, NG STAFF. SOURCES: U.S. FISH AND WILDLIFE SERVICE; USGS; MARINE CONSERVATION INSTITUTE

President Obama has signed a proclamation which will make the Pacific Remote Islands Marine National Monument the largest marine reserve in the world. Up until now, the Pacific Remote Islands Marine National Monument was a group of unorganized, mostly unincorporated United States Pacific Island territories managed by the Fish and Wildlife Service. They host many important species, including corals, fish, shellfish, marine mammals, seabirds,…

Climate, Oceanography, World Problems

Study suggests global warming has in fact accelerated in the past 15 years

Ocean Heat Content from 0 to 300 meters (grey), 700 m (blue), and total depth (violet) from ORAS4, as represented by its 5 ensemble members. The time series show monthly anomalies smoothed with a 12-month running mean, with respect to the 1958–1965 base period. If you take the past 15 years, it looks a lot like an exponential function to me.

You’ve probably heard it a few times: the climate is indeed warming up, but it’s all good, because the rate at which it is warming up is slowing down. But a new study published in Geophysical Research Letters analyzing ocean warming (which represents 90% of global warming) claims otherwise. Accelerating global warming Contrary to the rather popular belief, global warming…

Observations, Oceanography

NASA releases global salinity map

salinity

NASA has, for the first time, released a global map of ocean salinity. The first thing that popped up for me was the pulse of freshwater gushing from the Amazon, but other major features are worth noticing. An invisible seam divides the salty Arabian Sea from the fresher waters of the Bay of Bengal and a large patch of freshwater…

Biology, Environment, Oceanography

Dolphins call each other, not by name, but by whistle

dolphin calling

Every bottlenose dolphin makes its own distinctive sound, a high-pitched “eeee” through which they announce their presence. However, dolphins are also great at mimicking sounds, being able to copy even intricate computer generated sounds; this made researchers curious to see if dolphins can in fact mimic each other’s sound, and how they use this ability (it’s known that dolphins like…

Climate, Oceanography, Science, Studies

The El Niño turns out to be more chaotic than previously thought

cobb-kids

Why would the El Niño be important for the rest of us that don’t live in the western part of South America? Well because it also influences the climate in North America, Asia, Australia, Africa, even Europe perhaps.. so that basically means the whole world. The El Niño-the southern oscillation or ENSO is a sort of a heartbeat of the Earth’s climate,…

Discoveries, Feature Post, Oceanography, Science

The island that did not exist

newscontents_zoom_547

Who doesn’t dream of a deserted tropical island..sandy beaches made of coral sand, with crystal clear water, blue like the sky – you know what I mean. And let’s say it would be somewhere off the coast of Australia, maybe near New Calledonia. That sounds perfect.. it’s a great place, a great place to imagine. Well, guess what: you’re not the…

Animals, Oceanography

New study estimates 1 million marine species – one third still unknown

marine ecosystem

The world’s oceans are teeming with life, a new census estimating almost 1 million species out there; but marine life is declining, with the main causes being overfishing, ocean acidification and coastal damage. Avoiding a crisis The new numbers are just estimates, but they are much lower than previous studies, which put the number of species at around 10 million;…

Oceanography

Corals under attack summon friendly fish

gobies

The natural world sometimes has a magnificent way of dealing with its own problems – and this is exactly the case here. Coral threatened by toxic seaweeds emit a chemical signal which draws fish to eat away the danger. When Acropora nasuta corals come into contact with the toxic seaweed Chlorodesmis fastigiata, they scream for help; but they don’t use…

Climate, Environment, Oceanography, Pollution, Science

Stop Pollution or Face Severe Storms in South Asia

south asia storms

Hyderabad (South India): Man is the maker of his own destiny, say elders. The latest scientific studies on oceans endorse this adage. Be it  severe cyclonic storms, significant rainfall reductions, crop damages, mass mortalities and melting of Himalayan glaciers – all these could be prevented, if not minimized to a large extent, if we adopt changes in our urban life…