Seeing sharks in the wild often means donning a wetsuit and goggles. But that's not the case in Cape Verde. Shark Bay is a unique spot offering the chance to wade in and get up close with these animals. But it's fast becoming one of the top tourist attractions, and there's worry what that could mean. Joining Project Biodiversity, Charlie spends an afternoon tagging juveniles in the bay, and learning about the threats this species faces.