Some of the world’s most recognizable species are part of global talks happening in Brazil discussing whether to give them further protections.  Sharks, giant otters, hyenas and even the snowy owl are all among species proposed to be added to the appendices of the Convention on the Conservation of Migratory Species of Wild Animals (CMS), an envionmental treaty of the United Nations.  What unites them all is that they don't call one place home, meaning any threats — such as deforestation, climate change and industrial fishing — requires multi-country co-operation to help boost survival.  "They remind us all that [the] natural world is deeply interconnected," said Elizabeth Maruma Mrema, deputy executive director of the UN Environment Programme, at the opening news conference in Campo Grande, Brazil.  "Their journeys link continents, link oceans, link ecosystems and cultures — and ultimately, all of us."  CBC News spoke to a few experts about some of these species to find out where…