Flexible tub, gap on sides.

My tub is a large fiberglass tub. The front of it reminds me of what you would see around a whirl pool tub. It's flexible. The sides of the tub front that but up against the wall have come apart from the wall, the seal/caulk/ broke. Due to the fact its flexible I'm not sure how to seal it up. You can see its also not sealed where the tub meets the tiled floor. How would you seal up the gap on the side? See picture below. Attachment 39956 (http://www.doityourself.com/forum/attachments/toilets-sinks-showers-dishwashers-tubs-garbage-disposals/39956-flexible-tub-gap-sides-tub1.jpg)