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The sea lemon feeds mainly on the bread-crumb sponge Halichondria panicea and other sponges (4). It is hermaphroditic, possessing both male and female organs. Breeding occurs in the spring (5); thousands of eggs are produced in a long mass, which is attached to rocks and looks like a coiled whitish or yellowish ribbon (5). The larvae are free-swimming, and hatch after around four weeks. This pelagic stage lasts for around three months; larvae then undergo metamorphosis and become adults. It is thought that metamorphosis is triggered by the larva coming into contact with Halichondria sponges (5). Individuals are known to have lived to around 1 year of age, although they may live longer (5).


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Source: ARKive


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