HabitatThis seaweed is mostly found in the littoral zone or in rock pools, where they receive plenty of light and enough sea water to avoid desiccation. One of their behavioural adaptations is living in groups, preventing moisture loss and drying out.
ReproductionThe form of this seaweed reproduces asexually from broken fragments. The attached form of the seaweed reproduces sexually. Their sex organs are found on the surface of the beads. At high tides, the plant squeezes out its clusters of eggs or sperm in sticky masses. All plants release at the same time, maximising its fertilisation.
PredatorsNeptune's necklace is a food source for sea urchins, crustaceans and some fish. Young crustaceans and molluscs often live in the moist areas of the plant, for protection from predators and to retain moisture under low tide conditions.
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