[2] This octocoral thrives in areas with strong currents and, in contrast to stony corals, the branches are flexible and sway about with the movement of the water.

Pseudoplexaura porosa has few predators; animals that sometimes feed on it include the flamingo tongue snail, nudibranchs, butterflyfish and some angelfish.

On particular nights about five days after a full moon in summer and regulated by the lunar cycle, mature colonies liberate gametes into the sea.

Planula larvae that develop from fertilised eggs sink to the seabed five days later and undergo metamorphosis to found new colonies.

[5] Diterpenoids isolated from Pseudoplexaura porosa show cytotoxic antitumour activity when screened against samples of human tumour cells.