Adults are rare in the open ocean where they feed
upon large zooplankton including jellies.
Juveniles are spiny with a long filament extending from the odd
protruding tail. The spines and filament disappear as the adult
shape is assumed. Juveniles are abundant and preyed upon by
pelagic fishes. Attains 11 feet and 2 tons. Tropical and subtropical
seas worldwide.
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