The Medusa cable system is a 8700km submarine cable system connecting Lisbon and Sines, Portugal to Port Said, Egypt, with additional landings in Barcelona, Torreguadiaro, Zahara and Alacant in Spain; Tétouan and Nador in Morocco; Algiers, Bizerte in Tunisia, Algiers and Collo in Algeria; Marseille in France; Mazara del Vallo in Italy; Yeroskipou in Cyprus; and Tympaki in Greece.

The Medusa cable will land at a new hyperscale data center campus Start Campus in Sines and Carcavelos in Lisbon.

The Medusa cable system consists of 24 fibre pairs, designed with 20Tbs per fibre pair for a total system capacity of 480Tbps, deployed with  protection and predictive maintenance of submarine cable infrastructures (PSI) and an intelligent monitoring system based on DAS (Distributed Acoustic Sensing) technology.

The Medusa cable project is developed by the public-private consortium comprising AFR-IX telecom, the University of Alcalá, the Institute of Marine Sciences (ICM-CSIC) and Aragón Photonics.

The Medusa cable project is estimated to cost €326 million (US$374 million). The Medusa cable project will be financed in part by the European Investment Bank which will contribute €163 million ($186.5 million).