Prod someone’s memory about Disney’s Finding Nemo, and you’ll find a fond thought or two for the chilled-out, backstroke-swimming dude called Crush the Sea Turtle. Just as Nemo turned clown-fish into ocean celebrities (with worrying consequences), sea turtles are now established as the languid, eccentric grandfathers of the sea, all thanks to those clever folk at Pixar.

But here’s the grim reality. All sea turtles are either threatened or endangered. Not cool.

The good news is there’s a Cousteau on the case – Fabien, grandson of world-famous ecologist and ocean pioneer Jacques (who would have been 100 this year). He’s working with biologist Dr. Wallace J. Nichols to fill the oceans with sea turtles – a billion of them. Sound absurd? Not when you consider that adult turtles each lay clutches of up to 250 eggs in just an hour-long sitting.

If you aspire to be one of the lucky ones hiding behind the shoreline of one of the special beaches of the world where turtles lay their young (e.g. Key Biscayne, Florida), the Billion Baby Turtle Project will work to protect the experience and the creatures behind it – and it all starts in El Salvador. From there, a worldwide network of government bodies, volunteers, non-profits and former egg collectors will work to shore up (as it were) the nesting grounds of turtles for generations to come.

Images: nosha, Marcio Cabral de Moura

In the future, rising sea levels are going to drive people out of their low-lying communities and up to higher ground. But you might not know it’s going on right now.

As Luanne reported recently, the government of the Maldives is facing the prospect of inundation with admirable foresight by moving to a carbon zero economy by the end of the next decade and adding a splash of green to its luxury status.

The country is also going to use future profits to fund a wholesale relocation of the population to another part of the world before the island chain disappears under the waves by 2100.

Ninety years to prepare – sounds like luxury indeed if you’re from the Carteret Islands.

For the last 20 years, the inhabitants of this South Pacific atoll have been struggling to keep out rising tides, planting mangroves and erecting sea defences, but now the population of 2,600 are in full evacuation m0de, funded by the Papua New Guinea government.

Like the Maldives, the Carteret islands are low – just 170cm above sea-level at their highest point – and every high tide swamps the islanders’ efforts at subsistence agriculture and raises the salinity of the soil even further. It’s untenable, so they’re off.

Dan Box of The Ecologist has been watching the Carteretians rebuild their homes at Tinputz on the coast of Bougainville, and is currently preparing to visit the Carteret islands to see for himself how they’re faring.

Experts aren’t certain that the islands are being wiped out by global warming. This is a volcanic island chain, so sea floor movement is to be expected. But if independently rising sea levels aren’t primarily to blame, it could be the degradation of the coral that forms the backbone of the islands. When this dies, islands lose their natural defences against the sea – and coral is fragile enough to be killed by something as seemingly innocuous as sun screen, let alone the severely destabilizing effects of warmer seas.

However, as George Monbiot notes at The Guardian, these aren’t the world’s first “climate change refugees” – and they’re certainly not going to be the last.

For example, a rise of 20cm (well within the 88cm upper boundary estimated by the IPCC report in 2001) will make three quarters of a million people homeless in Nigeria alone.

We’re already coming up with innovative new ways to build flood-resistant homes, but until these become a widespread reality, we’re faced with the modern-day version of the King Canute story – and the best we can do is get out of the way.

Image: Addu Atoll, Maldives – nattu

For everyone’s good, we need to leave the oceans well alone for a while.

That’s the recommendation of over 100 scientific papers assessed by the Professor of Marine Conservation at the University of York, England. All these papers suggest that the demonstrably successful marine protected area (MPA) scheme should be dramatically expanded until it covers at least 20% of the world’s oceans – and maybe even up to one-third of them.

Why? Because many fish stocks are in deep crisis – not just depleted but at such dangerously low levels that their ability to reproduce is threatened, making their recovery more a question of If rather than When.

In the waters around Europe, conditions are dire – some 88% of all European fishing stocks are being overfished, and the European Union can shoulder a lot of the blame with its largely ineffective Common Fisheries Policy, doing little in practice to limit the efficiency of oversized fishing boat fleets and supporting muddleheaded subsidizing designed to help hard-hit fishermen make profits by chasing after what little is left under the waves.

The answer seems to be to ban fishing outright in the hardest-hit areas. This worked stunningly well around the UK’s Lundy Island – but that was small-scale. A worldwide, large-scale fishing ban is likely to light the touchpaper for the marine food industry and prove immensely unpopular for everyone whose traditional livelihood has just been outlawed to them. If managed badly, it’s going to ruin lives.

But what other answer is there? Either fish populations are allowed to recover – or they’re hunted until they never will again.

Image: treehouse1977