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Whale barnacles: exaptational access to a forbidden paradise
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Abstract.-Of all sessile filtrators, only some species of acorn barnacles managed to permanently settle on whales. Their key exaptation was probably a kind of biochemical cleaning process, which could be modified to penetrate into the host's dead cutis. Anchorage was further increased by coring prongs out of the whale skin (Coronula) or by transforming the wall into a cylindrical tube that added new rings at the base, while old ones flaked off at the surface in tandem with skin shedding (Tubicinella). Xenobalanus even everted its naked body into a stalked structure and reduced the wall plates ...
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Mies: The Window Framed.
Magazine article from: Fabrications
; ...was associated with the Vitruvian notion of firmitas, meaning that the edifice must look firm and strong. The intercolumniation permeating Greek architecture makes an opening reaching to another space, the agora, whilst the enclosure remains...
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