Lying in plain sight and lapping against our shores is what scientists describe as an unsung hero that has been quietly absorbing heat and keeping the world’s temperatures under control. And over the coming days, a group of Canadian researchers hopes to persuade the world that the ocean has a crucial role to play in fighting climate change. Prof. Anya Waite is leading a delegation from Dalhousie University’s Ocean Frontier Institute to attend the 27th annual Conference of the Parties of the U.N. Framework Convention on Climate Change — better known as COP27 — in Sharm el-Sheikh, Egypt, starting Sunday. They plan to share ways the deep blue carbon sink acts as a buffer and impacts climate forecasts.