cetacean
Contributor
We visited Sangalaki 20 years ago back when Borneo Divers had a small resort on the island. The macro diving was very good (nudis we found there we didn't see anywhere else). The turtles nested on the island every night (under the huts) which also meant that the surrounding reefs had a huge number of turtles.
The "jellyfish" lake at Kakaban was also worth the visit...
We spent 8 days on Sangalaki - mantas were elusive for the first 6 days (1-2 each day), but then the day before the full moon we had ~30 of them in the channel.
Quick search of YouTube videos shows that others diving Sangalaki in the last year or two have seen a number of mantas.
The "jellyfish" lake at Kakaban was also worth the visit...
We spent 8 days on Sangalaki - mantas were elusive for the first 6 days (1-2 each day), but then the day before the full moon we had ~30 of them in the channel.
Quick search of YouTube videos shows that others diving Sangalaki in the last year or two have seen a number of mantas.