Whales
Common and Samoan names Scientific name
Spinner dolphin (mumua)(5) Stenella longirostris
Bottlenose dolphin (mumua)(2) Tursiops truncatus
Rough-toothed dolphin (mumua)(2) Steno bredanensis
Sea snakes
Banded sea snake(9) Laticauda columbrina

Bryde’s whale(6) Balaenoptera edeni
Dwarf sperm whale(6) Kogia simus
Pygmy sperm whale(6) Kogia breviceps
Melon-headed whale(6) Peponocephala electra
Risso’s dolphin(6) Grampus griseus
Striped dolphin(6) Stenella coeruleoalba
Pantropical spotted dolphin(6) Stenella attenuata
Fraser’s dolphin(6) Lagenodelphis hosei
(1) Seasonally present (primarily Aug-Oct).
(2) Identifications by D. Mattila (NOAA) and/or J. Naughton (NOAA). Also identified from skulls that washed ashore: several pilot whales (near Sita Bay about 1993) and one sperm whale skull (Maloata 1994).
(3) Reeves et al. 1999. Marine mammals in the area served by South Pacific Regional Environ. Prog.
SPREP (Samoa).
(4) Visitor to Pago Pago Harbor in 2002; identified from photograph by J. Mead (Smithsonian
Museum Natural History) and W. Perrin (NOAA).
Humpback whale (tafola, ia maanu)(1) Megaptera novaeangliae
Sperm whale(2) Physeter macrocephalus
Short-finned pilot whale(2) Globicephala macrorhynchus
False killer whale(2) Pseudorca crassidens
Minke whale(3) Balaenoptera acutorostrata
Killer whale(3) Orcinus orca
Cuvier’s beaked whale(4) Ziphius cavirostris
Potentially present
Hawksbill sea turtle (laumei uga) Eretmochelys imbricata
Green sea turtle (laumei ena’ena, fonu) Chelonia mydas
Olive ridley sea turtle(7) Lepidochelys olivacea
Leatherback sea turtle(8) Dermochelys coriacea
(5) Probably present year-round.
(6) Probably present in region but not yet confirmed in American Samoa (Reeves et al. 1999 – see reference above).
(7) Rare: only three recorded occurrences (DMWR).
(8) Rare: a single juvenile was caught on longline gear near Swains in 1993 (DMWR).
(9) Rare: one verified occurrence in 2000 (NPS).
Sea turtles
MARINE MAMMALS
MARINE REPTILES

Dolphins

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P. Craig, NPS
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20. Marine mammal & reptile checklist for American Samoa

NATURAL HISTORY GUIDE