When Killer Whales Show Up, Great Whites Run Away

A NEW STUDY HAS FOUND THAT WHEN KILLER WHALES ARRIVE IN A FEEDING GROUND, GREAT WHITES SHARKS CLEAR OUT. In a study of great white sharks and killer whales, It turns out that great whites, renowned as the oceans’ apex predators, have apex predators of their own in orcas, or killer whales. Researchers at Monterrey Bay Aquarium and several partner organizations looked at patterns in the Greater Farallones National Marine Sanctuary off San Francisco, a

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Barnacles: Sticky Crustaceans Explained

AS ANIMALS THAT SPEND THEIR LIVES HIDDEN INSIDE HARD, PROTECTIVE SHELLS, IT’S EASY TO OVERLOOK BARNACLES. In fact, they may be subtle but they’re fantastic, busy little guys, always working the plankton for edibles. Need evidence? Here are some random barnacle facts. 1  Acorn and gooseneck barnacles are both crustaceans in the cirripedia subclass – cirripedia reflecting their singular adaptation of their legs into cirri used for capturing prey. 2   They’re the only crustaceans that are

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Manta Rays: Gentle Giants Explained

1)  THERE ARE TWO SPECIES OF MANTA RAYS – OCEAN MANTAS (MANTA BIROSTRIS) AND REEF MANTAS (MANTA ALFREDI). M. birostris is also sometimes known by the names giant ocean manta and Atlantic giant manta. Mantas are the largest members of the ray family and among the largest fishes in the sea. 2) Oceanic mantas are found worldwide, often reported as swimming great distances across oceans. They generally prefer tropical and subtropical waters. 3) Reef mantas are

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How to Treat Stings: Jellyfish & Fire Coral

  LET’S TALK ABOUT HOW TO TREAT STINGS. My front page post, “Nematocysts and the Science of Sting,” discusses the way jellyfish, fire coral and other cnidarians bring about their painful stings. On dive boats, in dive shops and, of course, on the internet there are lots of theories about how to treat stings by cnidarians – most of it more urban legend than factual. Here are some facts, culled from medical resources. THINGS YOU SHOULDN’T

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how cuttlefish hunt

How Cuttlefish Hunt – an Awesome Video

THE FIRST REASON FOR WATCHING THIS VIDEO OF A FLAMBOYANT CUTTLEFISH stalking a shrimp is that it’s a fascinating view of how cuttlefish hunt and capture their prey. The second  is that it’s a flamboyant cuttlefish – that’s its street name – an astoundingly dramatic, colorful creature described as the “flamenco dancer of the cuttlefish world” by the Monterrey Bay Aquarium (MBA), which produced the video. A FRONT-PAGE FEATURE SIDEBAR I get into the characteristics and

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