Yup, Tompa is right. These are collectable and it's not very hard.
![Smile :)](./images/smilies/icon_e_smile.gif)
Too bad I have no idea of getting the bananas att glimmer's galleon. But the bananas in Castle Crush that are inside the wall, are actually collectable. Through severe glitching of course.
![Smile :)](./images/smilies/icon_e_smile.gif)
There's also some bananas at Windy Well which isn't normally possible to be found but with glitching they can be found. Wait some time and I'll post some screenshots.
Edit: Oh wait, my memory failed me. There aren't no bananas inside the walls of Castle Crush. My bad.
![Image](http://img166.imageshack.us/img166/9372/donkeykongcountry2diddyks4.png)
This can be done by using a trick that allows one to jump multiply times in air. It as simply as do an upward throw and when the character lands you'll press exactly when she/he lands. It's very hard and requires perfect timing. 3 or 4 jumps is neccessary.
And I think I know why these bananas are there, I think they are originally placed there for being collected from the bonus - even though they are not collected when entering the bonus.
// Arne