When you are zoomed out on the map, the circles with numbers inside show how many surf spots are available to view in that area, which are called clusters. You can click and drag the map to move it around to see different regions.
1) To view those surf spots, click on one of the clusters.
2) You will zoom in and see all the surf spots in that area.
3) Click on a spot on the map, and the corresponding surf cam thumbnail will be highlighted.
4) Click on that surf cam thumbnail to view its cam and forecast.