Tabulipora2

Many bryozoan such as the tabulipora have both massive and branching forms. The sturdy, massive forms were best adaoted to live where water currents were strong and could sweep sediments off the colony. The more delicate, branching forms tended to live in more quiet areas where their fragility would be less of a hazard and where sediment in the water could fall between the branches instead of piling up as it did on the massive colonies.