アオミノウミウシ-神奈川、東京、埼玉、千葉から伊豆の海への玄関口 小田原ダイビングスクール

Deep Sea Brotula

During a dive to the Galapagos Rift Zone in 1988, scientists in Alvin saw this strange purple fish hanging out in the super-hot water gushing from hydrothermal vents at about 8,200 feet (2500 meters) depth. Pilot Ralph Hollis quickly netted the fish and brought it back to the surface for further examination. Scientists determined that it was in the genus Bythites, of which there are three Atlantic species, and promptly named it after Hollis: Bythites hollisi. They also found that it produces live young (as opposed to eggs) and is a relative of the better-known cusk eel. By 2002, more of these fish had been caught, and scientists decided that this Equatorial Eastern Pacific specimen was so different from the three Atlantic species that it warranted a new genus, Gerhardia. But a few years later, scientists wishing to avoid confusion with a beetle with the same moniker proposed another name, Thermichthys hollisi, referring to the fish’s preferred hangout, the hydrothermal vents of the Galapagos Rift Zone. So far, no other fish of this genus have been found.

via: Woods Hole Oceanographic Institution (WHOI)

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Daily fish fact #786

Peacock flounder!

It only takes a peacock flounder two to eight seconds to change its colour and blend into its surroundings! They study their environment and then with the use of pigment-containing cells, chromatophores, alter the patterns on their skin. When not camouflaged, these fish have striking blue rings.

ScienceAlert

Lost Age of Monotremes Revealed by Fossils From 100 Million Years Ago

As bones encased in rock rotted away, water-borne silica seeped into the crevices, solidifying into opal and preserving precious details for

As bones encased in rock rotted away, water-borne silica seeped into the crevices, solidifying into opal and preserving precious details for 100 million years. The resulting fossils now provide evidence that there really may have been an Age of Monotremes, before other mammals came to dominate. "It's like discovering a whole new civilization," says Australian Museum paleontologist Tim Flannery. "Today, Australia is known as a land of marsupials, but discovering these new fossils is the first indication that Australia was previously home to a diversity of monotremes." Only five of these rare mammals still cling to existence: one platypus and four echidna species, shared between Australia and Papua New Guinea. But due to their reptilian-like egg-laying feature, it has long been thought these animals evolved before placental mammals like us and marsupials.

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Uncharismatic Fact of the Day

Humans have been consuming alcohol for thousands of years, but we're not the only ones with a taste for it! The pen-tailed treeshrew's diet consists almost entirely of naturally fermented nectar, which can have an alcohol content as high as 3.8%. Given their small size, that's the human equivalent of consuming 10-12 glasses of wine. However, this species is able to fully metabolize the alcohol and avoid the intoxicating side-effects.

(Image: A pen-tailed treeshrew (Ptilocercus lowii) by Annette Zitzmann)

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🐙 Daily Cephalopod Fact: 🐙

Flamboyant Cuttlefish: Cuttlefish have a specialized, hollow feature called a cuttlebone that helps the animal maintain buoyancy by adjusting the levels of gas and liquid in its chambers.1 Because the flamboyant cuttlefish’s cuttlebone is relatively small, this species can only float and swim for short amounts of time. Instead of swimming, flamboyant cuttlefish “walk” along the ocean floor using their arms. They also have a highly developed sensory system that helps them respond and adjust to their surroundings.