. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 26.—Madrepora prolifera : A True Coral (Blake).An abundant corai of the Lagoon Flat. MILLEPORA ALCICORNIS 9i. Fig. 27.—Millepora alcicornis : A Reef Builder belonging TO THE HYDROMEDUSiE, BUT NOT A TRUE CORAL (BLAKE). Found everywhere on reefs; noticeable for its forms of growth,massive to lamellar to fine branches ; they are adaptations todepths and strengths of currents. 92 THE SHORE colonies by budding, the buds not separating, so thatthe whole may be regarded as a single anim
. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 26.—Madrepora prolifera : A True Coral (Blake).An abundant corai of the Lagoon Flat. MILLEPORA ALCICORNIS 9i. Fig. 27.—Millepora alcicornis : A Reef Builder belonging TO THE HYDROMEDUSiE, BUT NOT A TRUE CORAL (BLAKE). Found everywhere on reefs; noticeable for its forms of growth,massive to lamellar to fine branches ; they are adaptations todepths and strengths of currents. 92 THE SHORE colonies by budding, the buds not separating, so thatthe whole may be regarded as a single animal with themouth, tentacles, and all its other parts many timesrepeated. Underneath the animal coral is being built ; of itsrate of formation we require further definite infor-mation, but a single anemone of i millimetre diameterhas been known to bud out and form 693 grammesof coral in thirty-six months. Corals grow luxuriantlyin tropical waters, but of their food and of the con-ditions which affect them we have not as yet adequateknowledge. They have slitlike mouths within theircircles of tentacles, and, being fixed, are of courseincapable of searching for food in any way. Whencut open food is seldom found in their
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectocean, bookyear1912
