A variety of algae growing in Kyrkevik harbor right outside Havets Hus in Lysekil, Sweden. Among the algae are serrated wrack (Fucus serratus), red algae (Rhodophyta), gutweed (Ulva intestinalis) and sea lettuce (Ulva lactuca).
<a href="//commons.wikimedia.org/wiki/User:W.carter" title="User:W.carter">W.carter</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>