There are many different methods to choose from for your gallery. You can have a slideshow like you see below, you can have albums of photos, or you could keep simple by having a page full of individual photos. Or, you can have all three as this page shows. If you want to remove any portion of this page, simply click on the X when you hover over the row.
These are albums
Please refer to the tutorials under 'WHOI sites'
You don't have to have albums
You could have thumbnails of all your photos if you prefer.