Eyeway to Shell


Previously pre-posted:

Eyeway to Ell — a better paronamasia than this one…

Thalassobiblion

Ocean The Definitive Visual GuideOcean: The Definitive Visual Guide, introduction by Fabien Cousteau (Dorling Kindersley 2014)

A big book for a big subject: the sea. But “guide” isn’t the mot juste. “Encyclopaedia” is better, because the book covers all aspects of oceanography and marine life, drawing on physics, chemistry and biology to describe everything inorganic from waves and icebergs to whirlpools and underwater volcanoes, everything organic from a beautiful flower like beach morning-glory, Ipomoea imperati, to a grotesque fish like the Pacific blackdragon, Idiacanthus antrostomus. The flower is on the shore, the fish is in the abyss, but both of them descend from a single ancestor.

And that ancestor may have evolved in the sea. It certainly moved there before it gave rise to flowers and fish. This big subject is also a very important one: the sea is central to the evolution and continued existence of life on earth. Only the sun matters as much, but some marine life could potentially survive the disappearance of the sun:

Hydrothermal vents are similar to hot springs on land. Located near ocean ridges and rifts, at an average depth of 2,100m (7,000ft), they spew out mineral-rich, superheated seawater. Some have tall chimneys, formed from dissolved minerals that precipitate when the hot vent water meets cold, deep-ocean water. The mix of heat and chemicals supports animal communities around the vents – the first life known to exist entirely without the energy of sunlight. (pg. 188, “The Open Ocean and Ocean Floor”)

The deep ocean is a fascinating and little-known place: much nearer than the other side of the earth, but much harder to get to. Like climbing mountains, plumbing the abyss is difficult and dangerous. It’s interesting that both endeavours have been dominated by a particular group of human being: both the highest and lowest points on the planet were first reached by white males. Fabien Cousteau, who introduces this book, continues the tradition. He’s the grandson of Jacques Cousteau (1910-97), who popularized diving and marine biology for millions of people. Jacques saw huge advances in marine technology and science and his son and grandson have seen more. But the discoveries are still coming: as Fabien points out, it’s estimated that “over 90 per cent of the world’s biodiversity resides in its oceans”.

Discomedesae by Ernst Haeckel

Discomedusae by Ernst Haeckel

Some of that biodiversity left the water for the land and evolved new forms. Some of those new forms went back to the water, like the ceteceans and sea-snakes. Like human beings, they’re descended from fish, the most varied of all vertebrate groups. But some marine life never left its cradle. Where else can you find the beauty and strangeness of groups like the jellyfish? Radial symmetry is a marine speciality and when H.P. Lovecraft was inventing his aliens, he looked to under-space as much as outer:

But to give it a name at this stage was mere folly. It looked like a radiate, but was clearly something more. It was partly vegetable, but had three-fourths of the essentials of animal structure. That it was marine in origin, its symmetrical contour and certain other attributes clearly indicated; yet one could not be exact as to the limit of its later adaptations. The wings, after all, held a persistent suggestion of the aerial. How it could have undergone its tremendously complex evolution on a new-born earth in time to leave prints in Archaean rocks was so far beyond conception as to make Lake whimsically recall the primal myths about Great Old Ones who filtered down from the stars and concocted earth life as a joke or mistake; and the wild tales of cosmic hill things from outside told by a folklorist colleague in Miskatonic’s English department. (At the Mountains of Madness, 1931)

Lovecraft would have enjoyed Ocean as much as Jacques Cousteau. It closes with a detailed “Atlas of the Oceans”, with maps of the ocean floor all around the world. Before that, you can learn how the Corryvreckan whirlpool nearly killed George Orwell in 1947, where to find manganese nodules, why so many deep-sea creatures are red and what the narwhale’s horn really is. You can also feast your eyes on photography that records everything from microscopic plankton to swirling hurricanes hundreds of kilometres across. Big subject, big book. Beautiful subject and beautiful book too.

Magna Mater Marina

Front cover of The Illustrated World Encyclopedia of Marine Fish and Sea CreaturesThe Illustrated World Encyclopedia of Marine Fish and Sea Creatures, Amy-Jane Beer and Derek Hall (Lorenz Books, 2007)

Books about marine life need to be big, like this one, because the sea is a big place and has been occupied for far longer than the land. You’ll learn here that some land creatures have even returned to it, like the ancestors of cetaceans (whales et al), sirenians (dugongs and manatees), and sea-snakes. The saltiness of human blood means that we each carry around a miniature ocean of our own, symbol of our own marine ancestry. The Illustrated World Encyclopedia of Marine Fish and Sea Creatures is an excellent guide to the remainers and the returners of our ancient home. It isn’t a proper scientific encyclopedia, but you can get a good sense of the richness and variety of marine life here, from jellyfish to electric rays by way of the deep-water sea-cucumber, Irpa abyssicola, and the very strange tripod fish, Bathypterois grallator.

Bathypterois grallator

The tripod fish, Bathypterois grallator

That scientific name literally means “the deep-wing stilt-walker”, because the tripod fish lives very deep, up to 3·5km down, and props itself up on extended fin-rays to save energy on swimming. Its tiny prey float towards to it on the current: it isn’t an active hunter. It’s also hermaphroditic, so that each fish can fertilize its own eggs if, thanks to depth and darkness, it doesn’t find a mate. Unlike many other deep-sea fish, however, it isn’t particularly ugly or grotesque and wouldn’t easily find place in an H.P. Lovecraft story. Vampyroteuthis infernalis, or “the vampire squid from hell”, definitely would. It looks rather like an animated umbrella, with dark webs between its tentacles and huge, light-thirsty eyes.

Sea anemones by Ernst Haeckel

Sea anemones by Ernst Haeckel

Elsewhere there’s proof that the sea contains not just abysmal ugliness but sublime beauty too, from cone shells (Conus spp.) and jewel “anemones” (Corynactis viridis) (really a form of coral, the book notes) to gorgeous fish like the copperband butterflyfish (Chelmon rostratus) and the Moorish idol (Zanclus cornutus). And the greater blue-ringed octopus (Hapalochlaena lunulata) is beautiful too, despite the “toxin in its saliva estimated to be 10,000 times more deadly than cyanide”. There isn’t enough here about plankton, which can be strange, ugly, and beautiful, but plankton could fill several encyclopedias, and this one does incorporate some more recent scientific discoveries, including the marine life that doesn’t depend ultimately on sunlight, however deep down dark it lives. The giant beardworm, Riftia pachyptila, lives in symbiosis with sulphide-digesting bacteria at hydrothermal vents on the ocean floor. It’s not part of the sun-chain and might have homologues beneath the ice-cap of Jupiter’s moon Europa. Life needs liquid, so far as we can see, and certainly on earth it had to get its start there. This book is an excellent introduction to the great biological cradle that is the sea and would be an ideal gift for a budding marine biologist or scientifically inclined sailer or fisherman.


Elsewhere other-posted:

Guise and Molls — review of Octopus: The Ocean’s Intelligent Invertebrate (2010)
Mental Marine Music — the band who supplied the title of this review