Actually dolphins sleep with only one half of their brain at the one time (like a few people I know lol) They do this because they have to be conscious to be able breathe. If they sleep with their whole brain they can't breathe because they rely on their brain to tell them when to breathe. ie when their blowhole is at the surface.
It'a amazing visison. Like the dolphins followed their leader and they all lost their way. They didn't appear to be chasing food into the shallow water. It seems to have worked out ok.
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20ft Roma caravan - Mercedes Benz Sprinter - SA-based at the moment. Transport has no borders.
Management makes the decisions, but is not affected by the decisions it makes.
It was amazing just how quickly they got them all back in the water. A shame the same can't be done for whales but their size makes it so hard to get them back out there. Great piece of filming.