129. The cobalt-blue starfish, Linckia, up to 12 inches across, is the most common and 

 conspicuous stai-fish on the Great Barrier Reef flats. Unlike other stai-fishes, Linckia 

 lies exposed in bright da\'Iight. Members of this genus are the only starfishes that 

 can, and often do, regenerate a whole starfish from a piece of one arm. (Allen Keast) 



130. A little starfish, Ccramastcr placenta, brought up from a depth of 480 feet near 

 the Bay of Biscay, and photographed in a tank at the Plymouth Aquarium, where 

 it lived for at least a vear. (D. P. Wilson) 



131. The common European 

 brittle star, Ophiothrix fragilis, 

 shown at about the size of the 

 largest specimens, are more of- 

 ten half this size. Especially 

 fragile, when handled they may 

 throw oft" all the arms in pieces. 

 Underwater cameras reveal that 

 in favorable spots the floor of 

 the English Channel is carpeted 

 with dense masses of this spe- 

 cies. (D. P. Wilson) 



