The northern lagoon in Beru Island, I think is not properly mapped on Google maps and even this great site. Though t is very well mapped, I think the lagoon now has a little bit more land. This is because a spit has formed, in the north of the lagoon, and out of this there is a lot of sand in the North and East that could almost be called land but most people would only say it is land if there is vegetation there. But I think right at the bottom of some of the peninsulas shown in Google maps and here, there has been some extension of vegetation and almost purple looking soil. Additionally the east coast of the lagoon, has a lot of palm trees before the beach so it is not as much of a smooth glide look. I think there may be a wharf in the east of the wider isle, and in the south the spit has a lot of white sand, that may indicate something. 