image tag: marker, main color: blue, image quantity: 4

1920x1440px

buoy, buoy marker, ocean, sea, sea buoy, tide, tide data
1920x1440px

signpost, direction sign, sign post, tourism, marking, marker, sign
3500x2333px

internationale swim meeting, erlangen 11 12-03-20017, sva augsburg, 200 rücken, swimming pool, water, swimming lane marker
3872x2592px

southern most point, key west, florida, south, southern, landmark, monument