Aspect: Relatively squat white-ish polyp body crowned by two rows of yellow or brown tentacles numbering a total of 28. Slit mouth is visible in the centre of the oral disc on close-up views. Population: Regularly abundant. Notable feature: Hundreds of polyps may densely colonise a variety of sponges and develop a network of stolons that link their gastric cavities (stolons can be seen on one of the close-up views herewith). Environment: In sponges located in gently swept waters. Behaviour: -
