Glass eels typically refers to an intermediary stage in the eel’s complex life. The term typically refers to a transparent glass eel of the family Anguillidae. These are the freshwater eels that spawn in the ocean, and then enter estuaries as glass eels and swim upstream to live in freshwater during their juvenile growth phase. As the glass eels enter freshwater they start to become pigmented and are typically referred to as elvers. The elvers grow larger and are referred to as yellow eels, which are the juvenile stage of eels before their reproductive maturation begins.
Striped icebergs are quite a view. They can form a couple different ways. Blue stripes occur when layers of ice melt and refreeze so fast that no bubbles — which scatter light to give icebergs their white appearance — are created. If the water that freezes is rich in algae, the bands may appear green. Black, brown, and yellow striations are created by sediments picked up by a glacier as it runs down a mountain into the ocean.
Frog skeleton lino cuts from last night
Supervillan origin story: people not appreciating my science puns.
though usually hidden to the human eye, naturally occurring marine biofluorescence can be seen under certain wavelengths of light (like ultraviolet) which causes the cells of the organisms seen here to absorb the light — and some of the photon’s energy — and then emit back a now less energetic light with a longer wavelength and thus different colour.
(biofluorescence is not be confused with bioluminescence, which is a chemical reaction endemic to an organisms that causes it to glow.)
photos by (click pic) daniel stoupin, alexander semenov, bent christensen, louise murray, and american museam of natural history (click pic for species)
Total Lunar Eclipse (April 15, 2014) | Matthew Crowley
My first finished commission, courtesy of prehistoric-birds!
Here we have an Archaeopteryx showing off all the little details we know about it now, including the leg feathers, the black-tipped wing feathers, and the V-shaped split on the tail fan, along with a relatively accurate depiction of its wing feathers (give or take).
ovarian blood river
actually it’s an endothelium-lined lumen of a blood vessel
but it looks like a river
credit: Steve Schmeissner
I just discovered the sea snail genus “Umbraculum” and
What am I looking at
Oh my god its little head and eyes
It has a flat shell on top like a stupid hat and its giant mantle looks like a big fat poncho
What the FUCK how is this real
This old-ass drawing will help you understand what we’re seeing but clearly doesn’t capture the magic
An ornate 6 shot wheel-lock revolving musket decorated with gold, silver, ivory, and bone. Originates from Russia, 16th century, possibly restored or added onto in the 18th or 19th century.