Sea Slugs

Sea Slugs Latest News

A rare sea slug, Discodorid cebuensis, has been recorded in India for the first time after being spotted recently at Haji Ali, Mumbai.

About Sea Slugs

• Sea slugs, sometimes called ocean slugs, water slugs, or nudibranchs, are soft-bodied marine molluscs found in all the world’s oceans, from shallows to the deep sea. 
• They are a type of gastropod, a large group of mollusks that includes both marine and land species such as snails and slugs. 
• They have no shells, quills, or mantle cavities.
• They look like naked snails, i.e., without shells.  
• These slow-moving grazers consume algae, sponges, and other small invertebrates, showcasing a range of feeding habits.
• They are usually found in coral reefs, and their presence is a significant indicator of a strong coral ecosystem.
• Sea slugs are renowned for their vibrant colours and intricate patterns, which often serve as warning signals to predators due to their toxicity. 
• They get their toxicity from the creatures they eat, and some sea slugs can even keep the stinging cells of jellyfish inside their bodies.
• On their heads, nudibranchs have tentacles that serve as important sensory organs, helping them detect chemicals and movement in the water.
• When the sea slug eats, it absorbs and displays its prey’s pigment—the substance that gives the prey its color.
• Beyond their striking appearance, sea slugs possess other intriguing traits. 
  • Some can photosynthesise, producing their own food with sunlight. 
  • Others regenerate lost limbs, and a few can steal genes from their prey and incorporate them into their DNA.
• Most sea slugs are active throughout the day, but some species are also nocturnal.

Source: MD

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