This dataset presents the number of germinated individuals that originated from protoplasts from Ulva lacinulata and Ulva compressa. The individuals are separated into different morphologies (unattached discs and unattached germlings). Unattached discs are also separated into the color they presented at the end of the experiment to indicate fertility. Green discs: not fertile; Brown discs: fertile; White discs: dead discs after gamete release. This allowed to calculate the germination rate, morphology ratios and percentage of fertility.