Hi Jim. I'd suggest using the dried-up, old brown leaves that accumulate under the trees. They become sturdier i believe, last longer under water. They also hold a tropical look when brown. They tend to curl a little bit and make lots of hidey holes and caves/tunnels for the pangio's. Martin's Pangio pic, explains a lot. Looks superb if you have the time.
Hi Emma, here's a quik run down

:
Image Mode: Fine/7m
White Balance: Auto
Metering: Center-Weighted
Continuous: Single
BBS: Off
Colour Option: Standard
Image Adjustment: Auto
Image Sharpening: High
ISO: Auto
BKT: Off
Saturation Control: Normal
AF Area Mode: Auto
Auto Focus: Single AF