Foraminifera are single-celled marine organisms with a calcareous shell. They not only provide evidence of past habitats, but also play an important role in sediment formation. Along tropical and subtropical coasts, large benthic foraminifera live on the seabed of light-flooded shallow water habitats, in many cases attached to coral rubble or plant substrates. In the ocean, they can travel long distances by attaching to seagrass or algae and drifting across the sea surface. This journey by hitchhiking – technically known as ‘rafting’ – has rarely been scientifically documented.