BIOTEK MARINE - AQUA-SPY CORAL VIEWER BioTek Marine Sale! from 2999 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. BioTek Marine Coral Viewer Features: 6" Coral Viewer Stores on it's side so it's not easily scratched For viewing corals from the top down Available in Tek Series Blue & Grey or Bio Series Red & Black