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Maërl: A Rare Seabed Habitat


Maërl can be found in the clear waters of Galway Bay and around Ireland. Maërl beds are colourful, free-living, marine coralline red algae that are often mistaken to be coral. Unlike coral, maërl is a plant rather than an animal and needs to photosynthesise to produce energy. Maërl beds fill an important niche in the marine ecosystem, serving as a transition between rocky and sandy habitats. Maërl provides a stable and three-dimensional habitat onto which a variety of species can attach. Diverse benthic communities such as those of sea cucumbers, clams, scallops and other bivalves live around maërl beds. They are mobile sediments which roll and saltate gently along the seabed, following the motions of the tides and the rhythmic action of the waves.

Maerl Documentary Trailer

Maerl Documentary Trailer

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Cast & Crew

Director and Editor

Siddhi Joshi

Executive Producers

Siddhi Joshi

Martin Lyes

Surekha Jani

Hema Jani

Shruti Joshi


Eamonn Dunne

Johan Molanaar

Andy Stuart

Bulabosca Films


Brigit Vinnell

Emer O'Shea


Prof. Christine Maggs

Dr. Gerd Koennecker

Prof. Juliet Brodie

Nestor Robinson

Leanne Melbourne

Christopher Williamson

Prof. Jason Hall-Spencer

Dr. Yvonne Leahy

Thomas Furey


Laoise Kelly

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