In the shallowest waters surveyed, scientists found areas dominated by red algae, such as coralligenous and maërl beds, which supported dense gardens of sea fans and large schools of fishes such as horse mackerel.
Pictured is a golden anemone. Photograph by Juan Cuetos/Courtesy of Oceana Europe.
At intermediate depths, black corals full of shark eggs were filmed, as well as red coral and yellow tree corals, both of which are threatened in the Mediterranean.
Pictured here is red gorgonian ( Paramuricea clavata) Photograph: Juan Cuetos/Courtesy of Oceana Europe