... in Goniopora lobata and Stylophora pistillata are expanded continuously. Light at wavelengths in the range 400-520 nm was most effective in eliciting full tentacle contraction in F. favus and in P. sinuosa . Higher light intensities in the range 660-700 nm also caused tentacle contractions in F. favus...

... to vibration and the escape response effectively removes it from the vicinity of the stimulus. A single escape swimming contraction with tentacles contracted can propel the animal a distance equivalent to seven body lengths ( Donaldson et al . 1980 ). This is the second of two papers describing...