Not directly an 'amphibious' post, but these plants are pretty cool.
And they grow really close to the sea (so there is your connection).
This tone of green is also very relaxing, which is also an amphibious deal-i-o.
But neither of those reasons holds water - what really makes this more amphibious? The animals that live under these ferns - giant land crabs and the coconut crab. I didn't see any in the area (may be molting), but I will try to go to the other side of the island during the beach cleanup and take a picture of these crabs.