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I posted similar about UK waters the other day - it isn't as extreme here but it is noticeable, on Wednesday I completed a 2+ hour snorkel (with a wetsuit) when I'm often too cold after an hour.

Last night I snorkelled for 30 minutes with my son at 6pm without a wetsuit for either of us - the sea is that much warmer than average right now.

The heat is impacting the local catch of lobster and crabs, and increasing the number of new fish species here - and of jelly fish.

That form of migration is happening all over the world right now.

Virginia opossums, traditionally associated with the deep south, are now routinely spotted around Toronto, and are moving even further north. Armadillos, though still shy of the Canadian border, have crossed the Ohio River. American alligators, long stopped around Cape Hatteras, are now spotted in the tidal creeks of Virginia’s Eastern Shore. [1] Lobsters are moving north to the Canadian Maritimes from New England, and the blue crabs of Chesapeake Bay are filling the niches they're leaving behind.

It's much the same way in Europe. The European praying mantis used to be a hot-climate central Italian and Balkan insect. Now it's routinely spotted in Germany, has been found as far north as Latvia, and I found one in the usually-chilly Slovenian mountains just the other day!

Wherever you are on the map, look at the climate and ecosystem a few hundred miles south. That's likely where things are heading for you; it's a safe bet that the species that thrive there are the ones that are going to be best adapted to where you live in the second half of the 21st century.

[1] - https://defenders.org/blog/2023/12/why-we-almost-said-see-yo...

No problem, we will build a cooling system for the Mediterranean sea, so that tourism can keep going safely, planes keep covering the sky, consumers keep over-consuming, sigh..
Now we just need to see if air-conditioning also migrates north within Europe...
> "In the Red Sea, lionfish have predators. There are sharks and barracudas. Here, we have none of that."

They are there, too. It's common to see barracudas, and big ones, in France now...

As for sharks, it depends on which ones they mean because there are sharks in the Med, but not tropical ones (yet).

At this point you just have to make peace with very bad futures. We will all die, and sometimes there is nothing you can do to prevent things. To save the world, more people have to be willing to fight for this than currently are.

The pure physics of the situation are staggering. The specific heat capacity of water is huge. The volume of ocean surface is huge. We are completely fucked. Everything you've read minimizing this or pretending we can continue with business as usual is a lie. Atmosphere SO2, enhanced rock weathering, ocean iron fertilization - it is horseshit. We had to reduce emissions 30 years ago, and simply chose not to.

The idea we can preserve our standard of living through technology is comically false. At this point, every large nation on earth would have to simultaneously cut emissions by more than half, we'd have to create a coordinated global Manhattan Project around alternative energy, and another global Manhattan Project around geoengineering (while not tipping ourselves into an ice age). It would require unprecedented leadership and cooperartion.

The US currently has the stupidest president it has ever had, surrounded by psychopaths that do not care about human suffering and act on base zero sum power calculus. The world is at war. The tech industry is greedily and actively accelerating this with crypto and AI buildout. The odds of the human species successful navigation of this extinction - at a civilization level - event is almost zero.

bondarchuk: I changed this, please delete your comment.

(comment deleted)
> "In the Red Sea, lionfish have predators. There are sharks and barracudas. Here, we have none of that."

I don't know when the sharks will move in, but this final sentence of the article points to a broader problem with climate change induced migrations: species don't move at the same pace. Plants move much slower than insects, and insects faster then their predators. This will create imbalances, which will lead to big problems with new diseases and pests.

Eventually things will re-calibrate, but a lot of species may go extinct and we could see a very long period of reduced biodiversity. It takes a long time to adapt.

> "In the Red Sea, lionfish have predators. There are sharks and barracudas. Here, we have none of that."

Think again, I have seen huge population of barracudas around Port-Cros and Porquerolles (islands south of France, near Toulon) for decades.