Relationship Between Form and Function

The transition from terrestrial to aquatic habitats required secondarily aquatic tetrapods to undergo significant modifications to their physiology, ecology, and morphology to survive in the new medium. My research examines the relationship between form and function in air-breathing marine animals by linking functional morphology, biomechanics, and behavioral performance.

Findings:

• Pinnipeds have converged on three underwater feeding strategies: biting, filter feeding, and suction feeding.

• Feeding strategies are driven by morphology, prey resources, and evolutionary history. Each strategy is associated with specific musculoskeletal adaptations.

• After conducting underwater video trials with multiple pinnipeds, I discovered that seals primarily use suction feeding despite morphological adaptations for biting.

• Contrary to expectations, there is not a strong correspondence between morphology and feeding strategy.  Indicating that the marine environment imposes strong constraints on animal behavior, morphology, and physiology.