good morning, welcome to "new day," april 15th. the bluefin expected to dive into the indian ocean today after monday's submersible exceeded the depth limit. >> the signal that came to the co-pilots's cellphone while in flight is raising many new questions this morning. we're doing to dive into this with ouring pertsmorning. but first, erin mclaughlin is live in perth, australia. good morning, erin. >> good morn,ing kate. that's right, the bluefin-21 cut its mission short after encountering waters deeper than it's designed to handle. prompting the questions, can it handle the task at hand? overni. u.s. navy officials say no objects of interest were found among the data downloaded from their unmanned underwater robot. this as the first subsurface