TaxonHub
Sei Whale
Animalia Balaenopteridae

Sei Whale

Balaenoptera borealis

A large baleen whale species distributed in pelagic environments globally, characterized by its sleek body and distinctive coloration. Part of the Balaenopteridae family, known for rapid swimming capabilities and complex feeding behaviors.

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Sei Whale
Sei Whale
Sei Whale
Sei Whale
Sei Whale
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Ecology & Habitat

Habitat

Oceanic and coastal waters worldwide, preferring temperate and subpolar regions in depths ranging from 200-2000 meters. Migratory species with seasonal movement patterns between feeding and breeding grounds.

Ecological Role

Critical marine ecosystem regulator, consuming approximately 900-1,400 kg of zooplankton daily. Plays significant role in marine food web dynamics and nutrient cycling through their extensive feeding and migration patterns.

Morphology

  • SKIN COAT Smooth, dark gray epidermis with unique individual pigmentation patterns. Thick blubber layer for thermal regulation in cold oceanic environments.
  • LIMBS WINGS Powerful tail fluke for propulsion, relatively small pectoral fins for steering. Hydrodynamic body design optimized for efficient long-distance swimming.
  • HEAD SENSORY Specialized baleen plates for filter feeding, large cranial cavity with advanced echolocation capabilities. Complex sensory adaptations for marine navigation and communication.
  • BODY STRUCTURE Elongated streamlined body, typically 12-16 meters long, weighing 20-30 metric tons. Distinctive dark gray coloration with asymmetrical white patches on right side of jaw.
Data Source: TaxonHub Database
Image Credit: NOAA United States. National Marine Fisheries Service
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Balaenoptera acutorostrata

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