REQUEST FOR BACKBONES
OF RECAPTURED SHARKS

The large number of sharks
currently being recaptured offers
a unique opportunity for fishermen
to assist biologists in age
and growth studies.

IF YOU CATCH A TAGGED SHARK

Diagram of where to remove backbone from shark for ageing purposes

  1. Measure the fork length.

  2. Remove a 6 to 10 inch piece of backbone from over the gills.

  3. Freeze the backbone.

  4. Record the tag number and recapture details (species, date, location-latitude and longitude or loran, fork length, sex, method of capture).

  5. Call Lisa Natanson (collect) 401-782-3320 weekdays for information on mailing.

Apex Predators Program
NOAA / National Marine Fisheries Service
28 Tarzwell Drive
Narragansett, RI 02882-1199  USA

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This page was last updated: December 6, 2004