Contact TheIPD.US

Regulatory Actions
View Public Comments
Submit Comments

NMFS ITA for Gulf of Mexico
NMFS Acoustic Guidelines
NMFS IHA for Scripps

  Best Available Science on Acoustic Effects on Marine Mammals
  Seismic vs. Sonar
  Physical Effects
 Behavioral Effects
  Sound Propagation
 Extrapolation From Terrestrial Mammal Acoustic Effects to Marine Mammals
  Cumulative and Synergistic Effects
 Indirect Effects

  US Navy
 Sperm Whale Seismic Study
 Lamont-Doherty Earth Observatory Institute
 The Acoustic Ecology Institute
 Fisheries and Oceans Canada
 Sakhalin Energy Investment Company Limited

 Relevant NMFS Permits
 Major Studies and Reports

Comment on IPD
  Potential Research Projects
  Research Underway
  Structure of the IPD

CRE Interventions
  Agency Administrative Actions


Soundings Archive

Is Flipper Really Dumb?
Dolphins have long been considered extremely intelligent. This reputation has in part been based on the size of their brains and on their vocalizations. A South African scientist claims Flipper's reputation is undeserved in an article published in the May 2006 issue of the Cambridge Philosophical Society's Biological Reviews.

The article is by Dr. Paul Manger, a biologist at Johannesburg's University of the Wiwatersrand. Dr. Manger's article claims that dolphin's large brains are attributable to unusually high number of glial cells, which provide insulation for brain functioning and do not promote intelligence.

Dr. Manger also claims that dolphins have only seven basic sounds, and that dolphin vocalizations are simple and repeated species-specific calls.

  • Click here to read more

    Copyright 2005 The Center for Regulatory Effectiveness.
    All rights reserved.