Each square is knitted and then cast off as normal. Stitches for the next square are then picked up and knitting continues with the new pattern. This cuts down on the amount of sewing required to finish at the end. There will be seven strips, nine squares long - so there is a bit to go yet.
These are some of my favourites so far:
This square is supposed to represent seaweed floating in the water.
This is called 'Ripple' and requires the threading on to yarn of 140 beads in a particular colour sequence. It takes ages, but once you get going the knitting is quick enough.
This is one I love - once 153 sequins are threaded on. The pattern calls for turquoise opague plastic sequins, but mine are mettalic - if makes them look more like fish scales, which is the desired effect.
This is called 'Sun, surf and sea'. Debbie has done a super job of writing her coloured stripe patterns, as the next colour you need is generally at the end of the row when you get there, so you don't have to track it up the side of the knitting.