Maniwaya Island Reef is a shallow reef system situated five kilometres off the western coast of Maniwaya Island. Accessible only by boat, the site features a variety of hard coral species across depths ranging from 2 to 15 metres, with an average depth of 8 metres. Conditions are generally calm with mild currents and visibility typically between 10 and 25 metres. The site is suitable for beginners and offers a typical duration of 45 minutes. Facilities available nearby include parking, toilets, showers, changing rooms, equipment rental, and a dive shop. Divers and snorkellers should be aware of sharp coral present throughout the reef.

Ungab Rock Formation on the eastern coast of Mongpong Island is defined by its massive natural stone arch. The underwater topography consists of rocky terrain punctuated by interesting crevices. This reef site is suitable for intermediate snorkellers and offers both shore and boat access. Water temperatures at this location range from 27C to 31C throughout the year. Snorkellers can expect to encounter a variety of reef fish and invertebrates typical of the region, which thrive within the rocky habitat. The site is rated 4 out of 5 for snorkelling quality.