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One of the world’s most destructive invasive species is gaining new ground — or water — in Canada and up to Alaska. Carcinus maenas, which translates to “raving mad crab,” outcompetes many local crab species in devouring clams, oysters, and mussels, and they sometimes even eat other crabs and juvenile fish. They destroy seagrass, an essential habitat for juvenile salmon, herring, rockfish, and many other marine animals.
To pee or not to pee? That is not the question for technical divers, instructors, or others who spend long hours in the water. Proper hydration and comfort ensure that urine will flow. The question is, What’s the best way to handle it?
Young women beginning their careers as dive instructors regularly ask me how to be heard on a dive boat. Their experience is that guests don’t naturally listen to their directions. The dive industry has improved, and I don’t want to downplay the vast improvements that have already happened for women dive professionals. But this is a common question, so it remains relevant.
Whale sharks are easy. Basking sharks are hard. Whale sharks usually inhabit warm, tropical waters, while baskers prefer cooler, temperate regions.
BEING STUNG BY A LIONFISH is like being bitten by a poisonous snake. I found that out the hard way.
DAN medics and researchers answer your dive medical questions.
Everything changed for Una-Una on July 14, 1983, when a volcanic eruption destroyed the central hub of Indonesia’s Togean Islands in central Sulawesi. Lava covered 90 percent of the island, and thick, black smoke rose into the sky more than 9 miles high. The Indonesian Navy had evacuated all 7,100 inhabitants when the volcano gave signs of its impending eruption, preventing any loss of life.
THE CRYSTAL-CLEAR EASTERN ADRIATIC SEA is promising and seductive. The tiny islands, with their rocky beaches, upright cliffs, and hidden lakes, offer a variety of environments and ecosystems that are among the Mediterranean’s most intact and pristine. The southern part of the Adriatic’s Croatian side has steep, rocky plateaus with plenty of bridges, cracks, and caves. The sea has opened gaps in the porous rocks, carving and shaping cathedrals entirely built of limestone.
WHEN I THINK OF PARADISE, it’s warm blue water, friendly people, and pristine, uncrowded dive sites. Such places are rare these days and are usually expensive to visit — or that’s what I thought until I learned about St. Eustatius, a tiny island in the Caribbean that is also known as Statia. Nestled between Saba and St. Kitts in the Dutch Caribbean, Statia is just a short flight from St. Maarten.