DNA analysis reveals cryptic underwater ecosystem engineers

They look like smears of pink bubblegum on the rocks off British
Columbia’s coast, indistinguishable from one another. But a new DNA
analysis of coralline algae has revealed a wealth of different
species — a diversity that could hold the key to protecting
critical underwater habitats like kelp forests.
Source: FS – All – Ecology – News 2
DNA analysis reveals cryptic underwater ecosystem engineers