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Jellyfishes rely on drifting to eat. They take their luck with currents, and create tiny eddies to guide food toward their tendrils. Yet in waters from the Sea of Japan to the Black Sea, jellies today are thriving as many of their marine vertebrate and invertebrate competitors are eliminated by overfishing, dead zones and other human impacts. How have these drifters of the sea reversed millions of years of fish dominance, seemingly overnight?

a non-profit organization that estimates it has cleared nearly 1,000,000 pounds of plastic debris from Alaskan coasts over the past 10 years, is reporting “tons” of what it believes is likely tsunami debris washing up on the coasts of the Kayak and Montague islands. Chris Pallister, president of Gulf of Alaska Keeper, told Alaska’s KTUU TV that ““It’s a staggering mess [...] the magnitude of this is just hard to comprehend and I’ve been looking at this stuff a long time.

In my opinion, this is the single greatest environmental pollution event that has ever hit the west coast of North America. The slow-motion aspects of it have fooled an unwitting public. It far exceeds the Santa Barbara or Exxon Valdez oil spills in gross tonnage and also geographic scope. (I was in Prince William Sound during the during the Exxon Valdez oil spill and so have a sense of comparison). Tens of thousands of miles of coastline from California to the Aleutian Islands are going to be hit with billions of pounds of toxic debris. NOAA’s latest estimate is that 1.5 million tons of largely plastic debris will hit the western United States coast. That is 30 billion pounds. We expect Alaska to get the largest percentage of that with much of it lodging on northern Gulf of Alaska beaches. Most of this will be plastic which is full of inherent toxic chemicals that will leach into the environment for generations.

Possibly worse are the millions of containers full of anything from household chemicals to toxic industrial chemicals that are floating our way. They will eventually burst upon our shores…in sensitive inter-tidal spawning and rearing habitat, endangering shorebirds, marine mammals, fish and everything in between. We are already finding empty and partially full containers of tsunami related chemicals and fuel drums along the northern Gulf of Alaska shoreline. The heavier fuller containers will come later because the wind doesn’t push them as fast toward the Gulf of Alaska as they are more current driven. The light-weight, high-windage debris such as Styrofoam, buoys, bottles, empty containers and drums have already arrived in staggering quantities

Crops of corn, beans and oats are withering in the fields. About 1.7 million cattle have died of starvation and thirst. Hardest hit are five states in Mexico's north, a region that is being parched by the same drought that has dried out the southwest United States. The government is trucking water to 1,500 villages scattered across the nation's northern expanse, and sending food to poor farmers who have lost all their crops. Life probably won't improve soon. The next rainy season isn't due until June, and there's no guarantee normal rains will come then. Most years, Guillermo Marin harvests 10 tons of corn and beans from his fields in this harsh corner of Mexico. This year, he got just a single ton of beans. And most of the 82-year-old farmer's fellow growers in this part of Durango state weren't able to harvest anything at all.

Scientists predict this year's "dead zone" of low-oxygen water in the northern Gulf of Mexico will be the largest in history — about the size of Lake Erie — because of more runoff from the flooded Mississippi River valley.

Each year when the nutrient-rich freshwater from the Mississippi and Atchafalaya rivers pours into the Gulf, it spawns massive algae blooms. In turn, the algae consume the oxygen in the Gulf, creating the low oxygen conditions. Fish, shrimp and many other species must escape the dead zone or face dying

Federal and university scientists predict this year's zone will be between 8,500 square miles and about 9,400 square miles. The actual size of the dead zone will be measured over the summer.

The report, The Chaos Of Clean-Up, was prepared in response to widespread public concern among Gulf Coast communities about the safety of chemicals, known as dispersants, that were poured into the Gulf of Mexico to disperse oil during the Deepwater Horizon disaster. This report presents findings from a literature review of scientific research on each of 57 chemical ingredients that are found in dispersants that were eligible for use at the time of the Deepwater Horizon disaster. The ingredients and formulas for various dispersants on the market typically are not available, and it is not fully known which chemical ingredients among the 57 are found in which dispersant.

The review demonstrates the wide range of potential impacts from exposure to the chemicals found in dispersants. From carcinogens, to endocrine disruptors, to chemicals that are toxic to aquatic organisms, some of the ingredients in oil dispersants are indeed potential hazards. For instance, of the 57 ingredients, 5 chemicals are associated with cancer 33 chemicals are associated with skin irritation, from rashes to burns 33 chemicals are linked to eye irritation 11 chemicals are suspected or potential respiratory toxins or irritants 10 chemicals are suspected kidney toxins.

As for potential effects on the marine environment, 8 chemicals are suspected or known to be toxic to aquatic organisms 5 chemicals are suspected to have a moderate acute toxicity to fish Clearly, some of the chemical ingredients are more toxic than others, and some dispersants are more toxic in particular environments. The widely-varying toxicity of different dispersants underscores the importance of full disclosure and proper selection of dispersants for use in oil spill response.

Coral reefs are on course to become the first ecosystem that human activity will eliminate entirely from the Earth, a leading United Nations scientist claims. He says this event will occur before the end of the present century,

"a new first for mankind – the 'extinction' of an entire ecosystem"

The predicted decline is mainly down to climate change and ocean acidification, though local activities such as overfishing, pollution and coastal development have also harmed the reefs. The book, Our Dying Planet, published by University of California Press, contains further alarming predictions, such as the prospect that "we risk having no reefs that resemble those of today in as little as 30 or 40 more years"