Suckerfish are known for hitchhiking on blue whales. Scientists recently discovered that suckerfish, contrary to previous belief, do not suction themselves to the bodies of blue whales. Instead, they hover above the whales’ skim that forms a low pressure zone that the suckerfish can ride effortlessly. This is called the Venturi effect, when fluid pressure is reduced that results when a fluid flows through a constrict section.
This this knowledge in mind, conservationists are hoping to design a blue whale tracker that stays on longer than 24-hours. Additionally, scientists carefully analyzed the mouths of suckerfish. Their lips are made from vertically aligned collagen fibers in layers underneath the skin that make the rim a suction cup. This will be helpful as scientists develop adhesive technology.
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