Correction: High mortality of blue, humpback and fin whales from modeling of vessel collisions on the U.S. West Coast suggests population impacts and insufficient protection.

[This corrects the article DOI: 10.1371/journal.pone.0183052.].

The column heading "Mortality per 104 km2" for Tables 4–9 appears incorrectly. Please see the corrected Tables 4–9 here.

Table 4

Statistics of blue whale strike mortality within the Biologically Important Areas (BIAs) defined in Calambokidis et al. 2015.

Total mortality, mortality per 100,000 km2 and percent of total study area mortality are reported for each BIA.

Name	BIA Area (km2)	Months of peak abundance	Area Mortality	Mortality per 105 km2	Percent of total mortality
Gulf of the Farallones	5,243	July—November	<1	14	4%
Monterey Bay to Pescadero Pt	2,378	July—October	<1	4	<1%
Santa Barbara Channel to San Miguel	1,981	June—October	<1	22	2%
Pt Conception to Pt Sal	1,743	June—October	<1	9	<1%
Pt Arena to Fort Bragg	1,419	August—November	<1	1	<1%
Santa Monica Bay to Long Beach	1,187	June—October	<1	51	3%
Tanner-Cortez Bank	1,076	June—October	<1	5	<1%
San Diego	984	June—October	<1	20	1%
San Nicholas Is	427	June—October	<1	3	<1%

Table 9

Mortality on and off the continental shelf (defined by the 200-meter isobath).

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each region.

		BLWH Mortality			HUWH Mortality			FIWH Mortality
Area Name	Area (km2)	Area mortality	Mortality per 105 km2	Percent of total mortality	Area mortality	Mortality per 105 km2	Percent of total mortality	Area mortality	Mortality per 105 km2	Percent of total mortality
Continental shelf	57,030	3	5	15%	8	14	36%	1	2	3%
>200m	754,905	15	2	85%	14	2	64%	41	6	97%

In the Results and Discussion sections, the units for "mortality per area" and "strike intensity" also appear incorrectly. The correct units for "mortality per area" and "strike intensity" should be 105 km2.

Table 5

Statistics of humpback whale strike mortality within the Biologically Important Areas (BIAs) defined in Calambokidis et al. 2015.

Total mortality, mortality per 100,000 km2 and percent of total study area mortality are reported for each BIA.

Name	BIA Area (km2)	Months of peak abundance	Area Mortality	Mortality per 105 km2	Percent of total mortality
Gulf of the Farallones—Monterey Bay	9,761	July—November	3	32	17%
Northern WA	3,393	May—November	<1	6	1%
Stonewall and Heceta Bank	2,573	May—November	<1	<1	<1%
Santa Barbara Channel—San Miguel	2,639	March—September	<1	15	2%
Morro Bay to Pt Sal	1,908	April—November	<1	2	<1%
Fort Bragg to Pt. Arena	1,591	July—November	<1	2	<1%
Pt St. George	1,233	July—November	<1	<1	<1%

Table 6

Mortality statistics for shipping lanes.

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each region.

		Blue Whales			Humpback Whales			Fin Whales
Region	Area (km2)	Area Mortality	Mortality per 105 km2	Percent of total mortality	Area Mortality	Mortality per 105 km2	Percent of total mortality	Area Mortality	Mortality per 105 km2	Percent of total mortality
San Francisco	1,136	1	65	4%	3	255	13%	<1	20	<1%
Southern California	2,314	1	61	8%	<1	36	4%	1	48	3%
Washington	166	<1	4	<1%	<1	6	<1%	<1	<1	<1%
Waters outside lanes	798,015	16	2	86%	18	2	81%	41	5	96%

Table 7

Mortality within National Marine Sanctuaries.

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each sanctuary.

		Blue Whales			Humpback Whales			Fin Whales
National Marine Sanctuary	Area (km2)	Area Mortality	Mortality per 105 km2	Percent of total mortality	Area Mortality	Mortality per 105 km2	Percent of total mortality	Area Mortality	Mortality per 105 km2	Percent of total mortality
Cordell Bank	3,331	<1	12	2%	1	34	5%	<1	10	<1%
Channel Islands	3,818	<1	13	3%	<1	6	1%	<1	10	<1%
Greater Farallones	8,548	1	14	7%	4	49	19%	<1	7	1%
Monterey Bay	15,795	<1	5	4%	3	18	13%	2	10	4%
Olympic Coast	8,259	<1	<1	<1%	<1	9	4%	<1	<1	<1%

Table 8

Mortality within sovereign waters (3 Nm offshore) for each of the three west coast states, California, Oregon and Washington.

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each state.

		Blue Whale			Humpback Whale			Fin Whale
Jurisdiction Name	Area (km2)	Area mortality	Mortality per 105 km2	Percent of total mortality	Area mortality	Mortality per 105 km2	Percent of total mortality	Area mortality	Mortality per 105 km2	Percent of total mortality
California	14,280	<1	5	4%	<1	4	3%	<1	2	<1%
Oregon	3,268	<1	<1	<1%	<1	2	<1%	<1	<1	<1%
Washington	2,049	<1	<1	<1%	<1	2	<1%	<1	<1	<1%