Mesophyllum expansum

Mesophyllum expansum is a species of red alga belonging to the family Hapalidiaceae.

Description
Mesophyllum expansum can reach a diameter of about 30 cm. Illuminated by artificial light they show a beautiful pink color, with hanging branches. These calcareous encrusting organisms can be observed occasionally near the surface and can reach a depth of 70 m.

Distribution
This species is widespread in the Mediterranean Sea.