The Island with Bear Grylls (2014)

S1E4 Episode 4

After three weeks in the wild, the group struggles to sustain themselves on a scant diet of snails and coconuts. As desperation mounts, Mike and Chris confront perilous tides in their quest for food. Tensions rise within the group when it becomes clear that some members aren’t contributing equally. Upset by their inability to locate another caiman croc, a team decides to embark on a risky nighttime expedition into the hazardous mangroves in search of sustenance.