Marine transgression resulted in the forming of swamp and then the peat swamp. And the transgression later on put the peat formed in advance in deep water environment to form coal in the end.

海侵导致了陆表海盆地沼泽环境的形成，进而形成泥炭沼泽，而随后的海侵事件导致了先形成的泥炭迅速处于深水环境最终成煤。

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Forty-eight years ago, King wrote part of his eulogy in Saunders' wooden boat deep in the Bimini mangroves, a winding swamp of thick bushes and trees where 100 species of fish and marine life fill the murky waters.

CNN: A beach break in Bimini