Figure 1

Branchellion lobata and the Pacific round ray (Urobatis halleri). A) Ray, with numerous attached Branchellion lobata (arrows) on the ventral surface, initially collected in Mugu Lagoon, Los Angeles, CA and held in captivity at 18 °C at the Cabrillo Beach Aquarium (San Pedro, CA). B) Branchellion lobata with blood filled stomach diverticula (SD), lateral diverticula of the intestine filled with digested blood (LD). Cephalic anterior sucker (aS), eyespots (E), proboscis (P), the male (♂) reproductive system, including ejaculatory duct and seminal vesicle, the female (♀) reproductive system (ovaries), branchiae (B), and caudal posterior sucker (pS). Photo taken with a Pentax Optio WG-III digital camera over a light box. Scale 3 mm.