Common name: Synaptid sea cucumbers

Synaptidae, commonly known as synaptid sea cucumbers, are a family of elongated, worm-like echinoderms found in various marine environments. They are characterized by their lack of tube feet and reduced calcareous structures, which gives them a more flexible body. Members of this family often inhabit reef environments and are detritivores, playing a crucial role in nutrient cycling by processing organic matter in the substrate. They can be sensitive to water quality and require stable conditions with low nitrate levels. Synaptids are fascinating for their unique movement and feeding behaviors, making them an interesting, albeit advanced, choice for a reef aquarium.

1. 
   Common name: Lion's Paw Sea Cucumber

   Scientific name: Euapta godeffroyi
2. 
   Common name: beaded sea cucumber

   Scientific name: Euapta lappa
3. 
   Common name: Conspicuous Sea Cucumber

   Scientific name: Opheodesoma spectabilis
4. Common name: Cotton Candy Nudibranch

   Scientific name: Polyplectana kefersteinii
5. 
   Common name: Spotted Worm Sea Cucumber

   Scientific name: Synapta maculata
6. 
   Common name: Lampert's Sea Cucumber

   Scientific name: Synaptula lamperti