SharkFest Swimming with Blacktips RETURNS SUNDAY AUG 10 at 8P The research team free dives with Blacktip sharks to observe their interactions with humans. Info Next Airing: WED JUL 30 8PM ETWED JUL 30 10PM CTWED JUL 30 9PM MTWED JUL 30 8PM PTWED JUL 30 7PM AT SharkFest: Swimming with Blacktips The research team free dives with Blacktip sharks to observe their interactions with humans. Share Share this URL: Or you can use the code below to embed the video. The code updates if you change the width/height. Minimum dimensions are 320x211 pixels. <iframe width="640" height="391" src="http://channel.nationalgeographic.com/wild/sharkfest/videos/swimming-with-blacktips/embed/" frameborder="0" scrolling="no" allowfullscreen></iframe> Width: px Height: px 1 comments   Get Livefyre FAQ Sign in + Follow Post comment Link Newest | Oldest beverley crowell 5pts And they were shiffereing because of the cold????