Dall’s Porpoise

OverviewThe Dall’s Porpoise (Phocoenoides dalli) is a striking, powerfully built marine mammal belonging to the porpoise family Phocoenidae, indigenous strictly to the cold temperate and subarctic waters of the North Pacific Ocean. Named in honor of American...

False Killer Whale

OverviewThe False Killer Whale (Pseudorca crassidens) is a large, highly social oceanic delphinid belonging to the dolphin family Delphinidae, widely distributed across the deep tropical and warm temperate pelagic waters of the world. Despite sharing its vernacular...

Tucuxi

OverviewThe Tucuxi (Sotalia fluviatilis), pronounced ‘too-koo-shee,’ is an exquisite, small obligate freshwater delphinid indigenous exclusively to the vast river networks of the Amazon basin. While sharing its South American riverine home with the famous...

Irrawaddy Dolphin

OverviewThe Irrawaddy Dolphin (Orcaella brevirostris) is an extraordinary, charismatic euryhaline cetacean belonging to the family Delphinidae, occupying a remarkable ecological spectrum ranging from shallow, brackish coastal lagoons to deep freshwater river channels...

Amazon River Dolphin

OverviewThe Amazon River Dolphin (Inia geoffrensis), locally celebrated across South America as the boto or bufeo, represents the largest and most ecologically derived species of obligate freshwater cetacean surviving today. Descended from an archaic lineage of...

Fin Whale

OverviewAT A GLANCECommon Name: Fin WhaleScientific Name: Balaenoptera physalusCategory: MammalsSubcategory: CetaceansSize: Total body length: 65–85 ft (20–26 m); Southern Hemisphere individuals larger; Maximum recorded length: 89.6 ft (27.3 m)Weight: 40–80 tonnes...

Sperm Whale

AT A GLANCECommon Name: Sperm WhaleScientific Name: Physeter macrocephalusCategory: MammalsSubcategory: CetaceansSize: Adult males: 50–62 ft (15–19 m); Adult females: 33–40 ft (10–12 m)Weight: Adult males: 70,000–125,000 lb (32,000–57,000 kg); Adult females:...

Bottlenose Dolphin

OverviewAT A GLANCECommon Name: Bottlenose DolphinScientific Name: Tursiops truncatusCategory: MammalsSubcategory: CetaceansSize: Total body length: 6.6–13.1 ft (2.0–4.0 m); adult males average 10% larger than femalesWeight: 330–1,430 lb (150–650 kg), depending on...

Sowerby’s Beaked Whale

AT A GLANCECommon Name: Sowerby’s Beaked WhaleScientific Name: Mesoplodon bidensCategory: MammalsSubcategory: CetaceansSize: Total length 4.5 to 5.5 m (15 to 18 ft)Weight: 1,000 to 1,300 kg (2,200 to 2,900 lb)Lifespan: 30 to 45 yearsDiet: Teuthophagous (deep-sea...

Beluga Whale

AT A GLANCECommon Name: Beluga WhaleScientific Name: Delphinapterus leucasCategory: MammalsSubcategory: CetaceansSize: Length: 3.5–5.5 m (11.5–18.0 ft); males larger than femalesWeight: 1,100–1,600 kg (2,400–3,500 lb) for adult males; 700–1,200 kg (1,500–2,600 lb) for...