Guesthouses at Lake Te'Nggano can organise excursions on the lake. Regular stops include Octopus Cave, a spooky cave on the north shore, and a visit to Bird island , where hundreds of cormorants, boobies and frigates nest year-round. It's a fascinating sight. Your guide might well climb up a tree to catch a cormorant or two for your dinner (not for the squeamish). Lake Te'Nggano is not really a suitable place to get wet. There's no beach, and only Brits could don their swimming suits and bathe in the milky, pea-green waters. The only place that's suitable for a dip is Octopus Cave, which has limpid waters.