Punta Izopo Wall

At the eastern end of Tela Bay, the reef shelf drops sharply along the Punta Izopo headland, where the bay meets the open Caribbean and freshwater inputs from the Ulúa River delta create a unique mixing zone. Scientists believe the freshwater lens here — a regular pulse of cooler, nutrient-rich water mixing into the upper reef — may be one of the thermal refugia mechanisms that shields the Tela reef from the bleaching events that have devastated reefs to the east. The wall itself runs 20–25 m with unusually dense sponge cover and a resident population of Caribbean reef sharks. Large schools of snapper and grunt fill the mid-water column. An advanced dive for the depth and offshore exposure, but the shark and fish biomass alone justify the rating.