A selection of pelagic animals: 



I Arrow-worm (Sagitta). 2 Copepod. 



5 Annelid worm (Tomopteris). 



4 Pteropod (Creseis acicula). 



5 Siphonophore (Nectalia) . 6 Heteropod 

 (Carinaria). 7 Medusa (Liriope). 



8 Ctenophore. g Medusa (Eirene). 

 10 Salp (Ritteriella). // Pyrosome 

 (Pyrosoma). 



