weather permitting, during the week that the Rocky Shore surveys took 

 place. In addition to the lobster pot surveys, several SCUBA dives were 

 made annually to determine the abundance of lobsters in these areas. 



Artificial habitats, consisting of an array of 36 concrete blocks 

 (16" x 24" x 10"), with three burrows each, were installed during the 

 summer of 1973 to provide additional habitat in front of the quarry-cut 

 effluent, in Jordan Cove, near the intake structures, and adjacent to 

 Bartlett's Reef. Natural lobster areas chosen for observation in conjunc- 

 tion with the artificial areas were located south of the discharge, 

 between Twotree and Bartlett's Reef, near Bay Point, and south of Giant's 

 Neck. Each artificial habitat and natural area were checked monthly 

 using SCUBA. Monitoring of these areas continued through December 1975, 

 when artificial habitat monitoring was terminated in lieu of a more 

 intense tagging program using lobster pots. 



From September 1975-81, pot trawls were used to collect lobsters. 

 Pot trawls consisted of five double entry pots (3-5 cm lath spacings) 

 strung along a 50-75 m line bouyed at both ends. Four pot trawls were 

 placed at Jordan Cove, Intake, Effluent and Twotree (Fig. 1). All pots 

 were checked and rebaited three times each week. Lobsters > 55 mm 

 carapace length (CL) were banded to restrain chelipeds, brought to the 

 lab, and maintained in flow through seawater tanks. On Fridays, lobsters 

 caught that week were examined and pertinent data recorded; sex, presence 

 of eggs (berried) , carapace length (CL) , crusher claw position, missing 

 claws and molt stage (Aiken 1973) ; tagged with a serially numbered 

 international orange sphyrion tag (Scarrett and Elson 1965; Scarrett 

 1970) ; returned to the site of capture and released. Recaptured tagged 

 lobsters, severely injured or newly molted lobsters and those < 55 mm CL 



