coast costal early Morning sun sunrise water blue coastline kelp ocean rocks sea seashore seaweed surf usa waves bivalve Cardiidae. clams cockle edible farming fishery marine Mollusca Molluscs saltwater shell small spray Africa Aizoaceae botanical botany bright clear common crystalline crystallinum diamond dots dry fig fleshy hot Iceplant icicle icy leaf Mesembryanthemum plant reservoir shimmering silver south succulent summer thick warm access accessibility appropriate-behavior appropriate-behaviour be-careful beach beach-side bitumen care careful cycling cyclists families lookout movement moving observant path pathway pedestrians people protective risks safety sand sandy sealed share sharing surface surfaces surfacing texture textured textures track travel traveling travelling walk walkers walking