2024-20776. Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to Geophysical Surveys Related to Oil and Gas Activities in the Gulf of Mexico

Table 1—Take Analysis

Species	Authorized take	Scaled take 1	Abundance 2	Percent abundance
Rice's whale	0	n/a	51	n/a
Sperm whale	408	172.5	3,007	5.7
Kogia spp.	3  287	85.3	980	10.8
Beaked whales	547	55.2	803	6.9
Rough-toothed dolphin	1,017	292.0	4,853	6.0
Bottlenose dolphin	363	103.4	165,125	0.1
Clymene dolphin	1,713	491.7	4,619	10.6
Atlantic spotted dolphin	108	30.9	21,506	0.1
Pantropical spotted dolphin	13,612	3,906.5	67,225	5.8
Spinner dolphin	185	52.8	5,548	1.0
Striped dolphin	4,849	1,391.6	5,634	24.7
Fraser's dolphin	444	127.3	1,665	7.6
Risso's dolphin	210	62.0	1,974	3.1
Blackfish 4	3,384	998.4	6,113	16.3
Short-finned pilot whale	142	42.0	2,741	1.5
1  Scalar ratios were applied to “Authorized Take” values as described at 86 FR 5322, 5404 (January 19, 2021) to derive scaled take numbers shown here.
2  Best abundance estimate. For most taxa, the best abundance estimate for purposes of comparison with take estimates is considered here to be the model-predicted abundance (Garrison et al., 2023). For Rice's whale, Atlantic spotted dolphin, and Risso's dolphin, the larger estimated SAR abundance estimate is used.
3  Includes 19 takes by Level A harassment and 268 takes by Level B harassment. Scalar ratio is applied to takes by Level B harassment only; small numbers determination made on basis of scaled Level B harassment take plus authorized Level A harassment take.
4  The “blackfish” guild includes melon-headed whales, false killer whales, pygmy killer whales, and killer whales.