Neil Ball This is the lesser half of a two part museum package. It does try to capture some of diverse, wildlife found on the island, the displays are old and deteriorating. The museum could use some love.
Lyndsey Joint ticket with the Peace Museum next door which is better. Mostly stuffed birds and animals which I do not care for. Some information in English. No-one else was there during my visit. The highlight, if you aren't giant tortoised out from visiting Prison Island, are the 4 adult and a dozen or so junior giant tortoises.
Jacek Pliszka Musuem are not that great - they need lots of work. But the bonus are huge turtles/tortoises living in the garden.
Paul Waite Small history museum with full guided tour, not massive amounts to see but you also get to go across the road to Peace Memorial Museum with the same ticket which was much better. Probably need about an hour for both places.
virtuosok Small museum, dedicated mainly to local fauna. Shared ticket with nearby museum, you can do both in 30 mins.