With their flat bodies that resemble the trimmings of a skirt, marine flatworms always seem to be dancing through life.
When they come together to mate, a battle for parenthood ensues: Each flatworm tries to use its male organ to inject sperm into the other's body while trying to avoid getting stabbed."This ritual is what marine flatworms are known for, and divers try to capture that on video," said Ms Rene Ong, who did research on polyclad flatworms at the National University of Singapore's Tropical Marine Science Institute .
One species, Pseudobiceros stellae, also known as the starry flatworm, was observed to have a more"romantic" mating ritual. The researchers also found that two species brood, or sit over their eggs, for about two weeks, unlike most other species, which guard their eggs for a day. The marine flatworm, one of many kinds of flatworm, is only a few millimetres thick and can be found creeping and gliding along coral reefs, rocky shores, mudflats and seagrass, in shallow parts of the sea.
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