On Monday the Zygotes visited the famous Kaiyukan Aquarium in Osaka, Japan. It’s a truly impressive place, specializing in creatures of the Pacific Rim. The arrangement is very well-thought-out: one starts at the top, looking at coastal and riverside organisms like penguins, otters, monkeys, sloths, and sea lions. The visitor gradually descends through the building, seeing creatures at different depths in their respective environments.
The star of the aquarium is the resident whale shark, Kai-Kun.
Kai-Kun is an exceedingly big fish, with fins as long as a tall man, and a wide mouth which is very menacing if you’re a krill. Kai-Kun swims around and around in the giant center tank of the aquarium, escorted by rays and smaller fish. He’s the living mascot of the Kaiyukan Aquarium, and the gift shop is full of Kai-Kun merchandise and photos of various celebrities posing with a Kai-Kun model.
Continue reading "Sushi Deluxe" »
Those of us who live in the United States are familiar
with the foreign organisms that changed our environment, like European starlings, kudzu, zebra mussels, the Asian fungus that killed off the
American chestnut, and the other Asian fungus that nearly wiped out the American elm. But species from North America also get moved to other parts of the world, and given the right conditions they can become invasive and destructive too. Since I’m visiting Japan, let’s look at what happened when the North American pine wood nematode (Bursaphelenchus xylophilus) got accidentally got moved to Asia inside some packing crates early in the 20th century.
Continue reading "Friday Parasite #40: Invading Japan" »
People make a big fuss about vampire fish, also known as candiru, but when you consider their normal life cycle they’re actually a bit dull. They’re a family of tiny, relatively nondescript Amazon catfish that spend most of their time buried in the mud. When one gets hungry, it swims out into the water column and finds itself a larger fish to feed on. It bores into the host fish’s gills tapping into the arteries there. It stays until it’s engorged with blood, then drops off and heads back to its hiding place in the mud.
That’s it. No complex navigation through multiple hosts, no dramatic changes in body form between hosts, no insidious mind control to modify its host’s behavior. Just sharp teeth, anchoring spines, and an appetite for blood. They would hardly rate any attention at all if they didn’t sometimes get lost on their way to a fishy host.
Continue reading "Friday Parasite #39: No Horror Here" »
After finishing the model, the girls decided to make their full sized version four times larger. So they applied the power of math to scale up all the pieces of the frame, bought a couple of 8’ pine studs, and cut them into pieces.
(More beneath the fold)
Continue reading "Catapult Construction: Phase 2" »
Recent Comments