I just finished a few of these cards to keep on hand.
The embossed background was made using some old slab paper and the Cuttlebug embossing plate. I chalked *gasp* the background to give more definition and inked the edges. The seaweed is cut out of mulberry paper. The fishies are a cuttlebug die cut out of felt. The strips of paper are from the Scenic Route Metropolis line.
The arrow stamps are from the Scraptivity June kit (made by Tin Box creations). Best fishes stamp from stampendous (I think).