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Pictures of the field site in the Hamelin Pool, Shark Bay. (A) Low-to-mid tide at the Hamelin Station exposing domal stromatolites and microbial mats. (B) Submerged irregular stromatolites at the Hamelin Station. (C) Sample HPDOM, at the tip of the hammer, collected from a domal stromatolite (26°23′32.4"S and 114°09′41.4′E). (D) Sample HPIRR, below the hammer (circled), from a submerged irregular stromatolite (∼20 m away from HPDOM).
