Q BankQuestion BankDocsDocuments

B3.3.10 (HL)—Swimming adaptations in marine mammals

Marine mammal swimming adaptations reduce drag and improve propulsion through streamlined bodies, flippers, reduced hind limbs, tail flukes and blowholes.

Syllabus
First assessment 2025
Objective
B3.3.10
Level
HL

Concept essentials

  • Streamlined bodies reduce drag during swimming.
  • Flippers help steering and stability in water.
  • Tail flukes provide propulsion in many marine mammals.
  • Reduced hind limbs and pelvic bones reduce resistance.
  • Blowholes allow rapid surface breathing and close during dives.
ConceptIB Biology HL