oceanroamers

Providing management & consulting services to the marine, diving and tourism industries since 2003.

The world's oceans are in even worse shape than we thought

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The Great Barrier Reef is in rough shape after multiple bleaching events. The Ocean Agency / XL Catlin Seaview Survey Two new studies show that the world's oceans are in dire straits — even more than scientists previously thought. One study found that coral bleaching events, which can kill reefs, are now happening every few years instead of every few decades. And a new review found that oceans are losing oxygen faster than we realized, which could have serious consequences for marine life. Ocean health has a huge impact on human health, so solving these problems is essential. Our world is an ocean planet. The seas support hundreds of millions of people by providing food and jobs around the globe. Ocean plants produce up to 85% of the oxygen in the air we breathe. But a pair of new studies published in the journal Science indicate that the oceans have...
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$180bn investment in plastic factories feeds global packaging binge

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The global plastic binge which is already causing widespread damage to oceans, habitats and food chains, is set to increase dramatically over the next 10 years after multibillion dollar investments in a new generation of plastics plants in the US. Fossil fuel companies are among those who have ploughed more than $180bn since 2010 into new “cracking” facilities that will produce the raw material for everyday plastics from packaging to bottles, trays and cartons. The new facilities – being built by corporations like Exxon Mobile Chemical and Shell Chemical – will help fuel a 40% rise in plastic production in the next decade, according to experts, exacerbating the plastic pollution crisis that scientist warn already risks “near permanent pollution of the earth.” “We could be locking in decades of expanded plastics production at precisely the time the world is realising we should use far less of it,” said Carroll Muffett,...
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Why 4.5 Billion Years of Fluctuating Global Temperatures Can't Explain Climate Change Today

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One of the most commonly used arguments against human-caused climate change is that Earth has experienced severe fluctuations in temperature over its 4.5-billion-year lifespan, so it doesn't make sense to start freaking out about it now.   But while Boston was once covered in almost a mile (1.6 km) of ice, and the Arctic Circle was once so warm , palm trees and crocodiles populated it instead of ice and polar bears, what's been going on over the past century is unprecedented. Not convinced? Just check out the infographic below by Randall Munroe of XKCD fame. Illustrating the rise in global temperatures from 20000 BCE right up to 2016, nothing makes it more clear just how insane things have gotten during the fraction of Earth's timeline that humans have been dominating. As you can see below, in 20000 BCE, Earth was at the peak of the last ice age ,...
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Sea Lion Attacks Shut Popular Swimming Spot In San Francisco

Officials have closed a popular swimming area in San Francisco Bay after a third swimmer was attacked within in a week by what’s believed to be a sea lion. A man was bitten near the groin area by the animal early Friday as he swam in Aquatic Park Cove on the city’s north coast that’s used by dedicated swimmers who brave the cold waters. Other swimmers helped the man to shore and to an ambulance. The swimmer, identified as Rick Mulvihill, suffered a “severe bite,” a fire department official told the San Francisco Chronicle.   “I’ve been here 50 years and I’ve never heard of anything like this,” swimmer Bob Roper told the San Chronicle. “You have a lot of very, very nervous swimmers now and I don’t blame them.” He said Mulvihill was bitten on the upper thigh, “close to the family jewels,” and that it was “a pretty deep gash.” Another...
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Stress-induced ‘cardiac freeze’ response puts narwhals in peril amid warming, more trafficked waters

The heartbeats of most species, when frightened or stressed, tend to quicken. That is not so, however, for narwhals. When the marine mammals encounter stress, their heartbeats tend to, yes, lower — in spite of the fact that the creatures already have a staggeringly slow heartbeat of 10 beats per minute when in the act of diving down into icy waters to conserve oxygen and hold their breath for extended periods of time. This phenomenon finds itself at the center of research conducted by a team of scientists that was recently published in Science , in which heart-monitoring electrodes were attached via specialized suction cups to observe the behavioral and physiological responses of narwhals. Findings from the team’s study could pose a serious threat to the species given the increased human activity (namely the rise in oil and gas exploration and shipping) and melting sea ice in the narwhal’s native...
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