Echinoidea image


Mortonia australis (oral)
Mortonia australis (oral)
Description Oral side: Many accessory tube feet are developed in the ambulacra. By means of their suckered discs they hold tiny sediment particles over the aboral and oral surfaces just above the tips of the spines. Below this dense canopy a water current flows over the surface to provide all the appendages like spines, podia and pedicellariae with oxygen which they absorb through their skins.
Length 11 mm; Hawaii. Author Schultz, Heinke JPG file - 308.64 kB - 1 230 x 1 336 pixels added on 2009-02-23192 viewsEchinoidea taxaDigital photo, entire species Mortonia australis (Des Moulins, 1837)checked Kroh, Andreas 2021-02-24From reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Schultz, Heinke
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