Complex sentence: In 1970 he returned to Mallaig to live and stayed for 5 years developedfrienshis with art historian Magda Salvesen, poet Alastair Reid and artist Ken Dingwall but "he also needed challenge" so frequantly went to sea with local fishermen.
Split into simpler sentences: In 1970 he returned to Mallaig to live and stayed for 5 years. He met art historian Magda Salvesen, and developed frienshis with poet Alastair Reid and artist Ken Dingwall but also frequantly went to sea with local fishermen.