The artist has a number of sculptures in private collections both locally and abroad including in London and Switzerland. His finest wood sculptures adorn churches all around the Maltese islands. In 1989 he followed a course of studies in Cheltenham, England at the White Knight Gallery under the tuition of international artist Ian Norbury.
Presently Agius teaches technology and design in wood at Ninu Cremona Lyceum Complex, Victoria Gozo. Mario has been actively taking part in various collective exhibitions including those organised by the Members of the British Woodcarvers Association. Last June he had his solo exhibition entitled ‘Nature Exalted’ which included a selection of wood and stone sculptures. It was exhibited at the Banca Giuratale in Victoria Gozo which was very well received.