Complex sentence: Aside from the island itself, the only location home to Sable Island Ponies is the Shubenacadie Wildlife Park in Shubenacadie, Nova Scotia which maintains descendants of Sable Island Ponies removed from the island in the 1950s by the Canadian Department of Transport.
Split into simpler sentences: Aside from the island, the Sable Island Ponies live only at the Shubenacadie Wildlife Park in Shubenacadie, Nova Scotia. It maintains descendants of Sable Island Ponies removed from the island in the 1950s by the Canadian Department of Transport.