Section 1 Introduction - National Marine Fisheries Service - NOAA

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NBK at Bangor EHW-1 Pile Replacement Project Final <strong>Marine</strong> Mammal Monitoring Report Figure 16. Pinniped Behavioral Events Observed Before, During, and After Pile Driving Analysis of Behavior by Construction Type. Behaviors were compared for V and SSV to determine if behavior differed between these two types of construction. Cetaceans The only behavior for cetaceans during both SSV and V was “swimming.” The only cetacean sighting during SSV was an individual “swimming” (Table 21, Figure 17). During V, cetaceans were most often “swimming” (n=3; 60%) (Table 21, Figure 17). “Diving” was only observed during V. Table 21. Cetacean Behaviors by Construction Type Behavior Pile Driving Category [percent (n)] SSV V % Obs % Obs Swim 20 (1) 60 (3) Dive 0 (0) 20 (1) Bangor, Washington 60
NBK at Bangor EHW-1 Pile Replacement Project Final <strong>Marine</strong> Mammal Monitoring Report Pinnipeds Figure 17. Cetacean Behaviors by Construction Type During both SSV and V procedures, pinnipeds most often were “looking.” During SSV procedures, pinnipeds were most often “looking” (n=6; 4.6%) and “milling” (n=4; 3.2%) (Table 22, Figure 18). During V, pinnipeds were most often “swimming” (n=24; 19.1%), “looking” (n=23; 18.3%), and “diving” (n=19; 15.1%). All behaviors were seen with greater frequency during V than SSV, including more “looking,” “diving,” “swimming,” and “traveling” (Table 22, Figure 18). Table 22. Pinniped Behaviors by Construction Type Behavior Percentages Among All Categories [percent (n)] By Pile Driving Activity SSV V Dive 1.6 (2) 15.1 (19) Enter Water 0 (0) 3.2 (4) Forage 0 (0) 2.4 (3) Haul Out 1.6 (2) 2.4 (3) Look 4.6 (6) 18.3 (23) Mill 3.2 (4) 3.2 (4) Rest 0 (0) 3.2 (4) Sink 2.4 (3) 4.8 (6) Slap 0 (0) 0.8 (1) Swim 2.4 (3) 19.1 (24) Travel 0 (0) 7.9 (10) Vocalize 0.8 (1) 3.2 (4) Bangor, Washington 61
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Section 1 Introduction - National Marine Fisheries Service - NOAA

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