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Nmenton the growthprocess leading to a variety of growth orms Growth by accumulation of modules allows the organism to it its shape to its environment ie have plasticity In many seaweeds sponges and corals differences in exposure to water movement cause significant changes in morphology Agood example of this plasticity is the Indo Pacific stony coral Pocillopora damicornisVeron and Pichon 1976 shown in Plgri In very sheltered environments this species has a thin branching growth orm The growth orm gradually transforms to a compact shape when the exposure to water movement increase.

Ntrealizations ofthe growthformThis isincontrast to unitaryorganisms such asvertebrates and insects in which a single celled stage develops into a well defined determinate structure In many cases the growth process in modular organisms leads to complex shapes which are often uite difficult to describe in words In most of the biological literature these orms are only described in ualitativeand rather vague terms such as thinlybranchingtree shaped and irregularlybranching Anothermajor characteristic ofmarine sessile organisms is that there is reuentlyastrongimpactofthe physical enviro.

Rowth and orm of marine organisms inhabiting hard substrata the Gmarine sessile organisms ischaracterized by anumber ofremarkable properties One remarkable Lots of Hearts feature of these organisms is that many ofthem can be characterizedasmodularorganisms Modularorganisms are typically built ofrepeated units the modules which might be a polyp in a coral colony or afrond in seaweeds In most cases the modulehas adistinctiveorm while the growth orm of the entire colony is reuently an indeterminate orm Indeterminategrowthindicatesthatthe same growthprocess mayresult in an infinite numberofdiffere.

Pdf/E–pub The Algorithmic Beauty of Seaweeds Sponges and Corals

Jaap A. Kaandorp0 on The Algorithmic Beauty of Seaweeds Sponges and Corals