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Volume III, Appendices EM - National Marine Fisheries Service ...

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Disposition<br />

Release<br />

The goal in rehabilitating oiled marine mammals is to release healthy animals back into their<br />

natural environment. Rehabilitators, in consultation with designated trustee representatives<br />

(NMFS/FWS) must prepare a release plan that is communicated to and authorized by the Unified<br />

Command through the Liaison Officer. Certain criteria must be met prior to releasing marine<br />

mammals back into wild populations. For those animals that do not meet release criteria, several<br />

options are available including additional rehabilitation, euthanasia, or placement in a long-term<br />

holding facility.<br />

While little is known about optimal oiled marine mammal release criteria, current<br />

recommendations are based on information derived from the Exxon Valdez spill and husbandry<br />

practices at aquaria and rehabilitation centers in the United States. NMFS and FWS have<br />

developed guidance and criteria for release based on optimizing the chances for survival and<br />

minimizing the risk to wild populations (Best Practices for <strong>Marine</strong> Mammal Stranding Response,<br />

Rehabilitation, and Release – Standards for Release, http://www.nmfs.noaa.gov/pr/health). The<br />

Standards for Release document describes how to characterize and assess animals using several<br />

parameters.<br />

Standards for Release<br />

1. Historical Assessment<br />

2. Developmental and Life History Assessment<br />

3. Behavior Assessment and Clearance<br />

4. Medical Assessment and Clearance<br />

5. Release Logistics<br />

6. Post Release Monitoring<br />

Current criteria require that animals show normal species-specific behavior (feeding, swimming,<br />

and diving), adequate body weight for age class and species, pelage proven to be in good<br />

condition, hematological and serum chemistry values within the normal range, no evidence of<br />

infectious diseases, and physical exam findings should be unremarkable. Other ancillary tests (e.g.<br />

Leptospira titer, morbillivirus titer, microbiological cultures, urinalysis, fecal examinations, etc.) may<br />

also be performed on a case-by-case basis depending on individual animal and population level<br />

concerns. The Unified Command will decide upon the location of the release with guidance from<br />

the trustee agencies<br />

Upon approval for release by UC, an exit photo of each marine mammal must be taken and<br />

specifics of the release (location, time, personnel) recorded for Natural Resource Damage<br />

Assessment purposes.<br />

Post-release monitoring, if at all possible, should be undertaken during marine mammal releases<br />

following oil exposure using radio or satellite telemetry. This effort should focus on survival rates,<br />

behavior, and reproductive success following oil contamination and rehabilitation, thus enabling<br />

4/10/2006 Draf t 28

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