Form: powerful swimming appendage, typically two lobes, posterior or caudal part of the body Function: propulsion - The more forked the fin is the faster they can swim - rounded finds are used for more of a burst motion to escape predators There are 6 types

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1. Form: powerful swimming appendage, typically two lobes, posterior or caudal part of the body
Function: propulsion - The more forked the fin is the faster they can swim - rounded finds are used for more of a burst motion to escape predators
There are 6 types