Bait Ball

Bait Ball

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A bait ball, or baitball, occurs when small fish swarm in a tightly packed spherical formation about a common centre. It is a last ditch defensive measure adopted by small schooling fish when they are threatened by predators. Small schooling fish are eaten by many types of predators, and for this reason they are called bait fish or forage fish. For example, sardines group together when they are threatened. This instinctual behaviour is a defense mechanism, as lone individuals are more likely to be eaten than large groups. Sardine bait balls can be 10-20 metres in diameter and extend to a depth of 10 metres. The bait balls are short lived and seldom last longer than 10 minutes.show more

Product details

  • Paperback | 164 pages
  • 152 x 229 x 10mm | 249g
  • Dict
  • United States
  • English
  • black & white illustrations
  • 6135844296
  • 9786135844290