There are at least NUMBER@1 species of ascidians found on the reef system , ranging in size from NUMBER@2 mm-10 cm -LRB- NUMBER@3 NUMBER@4 in -RRB- in diameter .

There are at least NUMBER@1 species of sea squirts -LRB- ascidians -RRB- found on the reef . These vary in size from NUMBER@2 mm-10 cm in diameter .
