This cruise criss-crosses the mouth of the Santubong River in search of the rare Irrawaddy Dolphin. The Irrawaddy, or snubfin dolphin, inhabits rivers, estuaries and shallow coastal areas. The Santubong area is one of the best places in Sarawak to view this unusual looking marine mammal. The dolphins are often seen swimming and diving around small fishing boats in the estuary. Occasionally they are seen playing in the open water. Visitors will need a keen eye to spot the dolphins at first, but after a short wait they can often be seen surfacing all around the boat.