Tuna Experience Little Water Drag


Tuna can swim through the ocean at high speeds thanks to their streamlined body, large crescent-shaped tail, and powerful muscles. Tuna migrate through the open sea in waters deeper than 200m. They gain propulsion from moving the base of their tail from side to side like a pendulum, without moving the upper half of their body. This is called the “tuna stroke,” and is also seen in sharks and mackerel. This type of swimming reduces water resistance by keeping the body in sync with the flow of water, and minimizes the parts moved, which reduces wasteful expenditures of energy. This is an efficient way of swimming, particularly for fish like the tuna that continuously swim at high speeds.

Functional Classification

Efficiency(Energy Saving, Resource Saving, Light):
Air or water resistance evasion

Environmental Solution Classification

Related Literature

Technical Application

Used in the development of efficient tidal power generators.

Products and Services

  • bioSTREAM™ inspired by the movement of tuna fins (BioPower Systems).

Type of Business

Proposals of Applied Technology

Proposals of Applied Industry

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