Description:
Baseodiscus delineatus is a common species of ribbon worm in the IRL.  It is typically a cream or yellow color, with orange to red longitudinal stripes that run the length of the body.  Typical lengths for males and females of this species are 3 inches and 8 inches respectively. 

Habitats: 
Baseodiscus delineatus is epibenthic, occurring in gravel, cobble, and shell of oyster reefs and marina pilings in the intertidal zone.   B. delineatus occurring at Jim Island near Fort Pierce Inlet, tolerates summer water temperatures in excess of 30 °C, and winter water temperatures below 17 °C for short periods of time.  

Range: 
B. delineatus is a common species with wide distribution throughout the Indian River Lagoon.