About the Commission

General Information

History and Purpose

Creation of the IWC

75th Anniversary of the IWC

75th Anniversary - Reflections

Membership & Contracting Governments

List of Previous Chairs

Joining the IWC

Participation

Vacancies

Key Structures and Processes

Organisational Structure

Commission Sub-groups

Bureau

IWC Finance & Funding

Secretariat

Database of Recommendations

Key Documents

ICRW Convention

Schedule

Rules of Procedure

Resolutions

About Whales

Introduction

Taxonomy:different species & how they are related

Population Estimates:population sizes & how they are estimated

Population Status:assessing if populations are in recovery or decline

Status of Whale Populations: at-a-glance graphics

Status of Whale Populations: text summaries

Further Information and Methodology

Sounds

Species

Blue whale

Bottlenose dolphin

Bowhead whale

Bryde's whale

Common dolphin

Dusky dolphin

False killer whale

Fin whale

Gray whale

Humpback dolphin

Humpback whale

Irrawaddy dolphin

Killer whale

Minke whale

Pilot whale

Right whale

Sei whale

Sperm whale

Spinner dolphin

Spotted dolphin

Striped dolphin

Conservation & Management

Whaling

Aboriginal Subsistence Whaling

Special Permit Whaling

Commercial Whaling

Total Catches

Revised Management Procedure

Animal Welfare Issues

Conservation Committee

Conservation Committee Working Methods

CC/SC Joint Working Group

Protocols & Best Practice Guidelines

Database of Recommendations

Bycatch & Entanglement in fishing gear

Bycatch

Entanglement

Strandings

Advice to the Public

Strandings Initiative

Expert Advisory Panel on Strandings

Vessel Strikes

Expert Panel on Vessel Strikes

Environmental Concerns

Climate Change & Ecosystems

Underwater Noise

Marine Debris

Chemical Pollution

Cetacean Diseases

Marine Renewable Energy

State of the Cetacean Environment Report (SOCER)

Conservation management plans

Western Gray Whale CMP

South Atlantic Southern Right Whale

South Pacific Southern Right Whale

Franciscana Dolphin

South American River Dolphin

Central American Humpback Whale

Guiana Dolphin

Lahille's Dolphin

Sanctuaries and MPAs

Whale Watching

Whale Watching Handbook

Small cetaceans

Small Cetaceans Voluntary Fund

Small Cetacean Task Teams

Small Cetaceans - Wildmeat

Cetaceans and Extinction

Infractions

Scientific Research

Scientific Committee

Summary of Scientific Committee Activity 2022-24

Data Availability

Scientific Committee Meetings

Protocols & Best Practice Guidelines

Database of Recommendations

IWC Research Funds

Guidelines for Funding Research

Small Cetaceans Voluntary Fund

Small Cetacean Voluntary Fund Donor List

Southern Ocean Research Partnership

International research cruises

SOWER

POWER

Reports

Scientific Committee Reports

National Progress Reports

State of the Cetacean Environment Report (SOCER)

Workshop Reports

CC/SC Joint Working Group

Research & Data Requests

Meetings & Events

Upcoming Events

IWC70 2026

Recent Events

IWC69 2024

Pre-Meeting - ASW Sub committee

IWC69 Virtual Sub-Committees

SC69B - 2024

SC69A

IWC68

IWC Virtual Special Meeting

SC68C

SC68D

Pollution 2025 Workshop

Climate Change Workshop 2021

IWC Bureau meeting

IWC Conservation Committee - Intersessional 2020

General Information

Main Outcomes of 2024 meeting

Venues and dates of all previous meetings

IWC Resolutions

IWC Meeting Voting Records

Procedures for observers at IWC meetings

Verbatim Records

All Meetings & Workshops

Commission Meeting Archive

Scientific Committee Meeting Archive

Resources & Media

Reports

Commission Meeting Reports

Intersessional Report of the IWC 2022-24

Scientific Committee Reports

Conservation Committee Reports

IWC Bureau Reports

Reports of the IWC Special Issues (1974 to 1998)

Documents

IWC Archive - All Documents

Commission Meeting Papers

Commission Resolutions

Commission Workshops

Journal of Cetacean Research & Management

JCRM current issues

JCRM historic archives

Media Resources

News Archive

News Bulletin

Meeting Accreditation

IWC YouTube Channel

IWC Twitter Feed

Competitions

Protocols/Guidelines

Databases & Applications

Photo Gallery

Communications/Circulars

Website Tools

Glossary of Terms

Choose your language:

en

Open search

Document Download: Royal_Soc_Open_Science_vaquita_decline.pdf

Published: 1 Mar 2021

Filename:

Royal_Soc_Open_Science_vaquita_decline.pdf

Download now (pdf, 1 MB)

FOLLOW US

NAVIGATION

About the Commission

About Whales

Conservation & Management

Scientific Research

Meetings & Events

Resources & Media

LINKS

Privacy Notice
Disclaimer
Contact Us
Site Map
Vacancies
Manage cookies

International Whaling Commission
Suite 2, First Floor, Victory House, Vision Park, Histon, Cambridge, CB24 9ZR

+44 (0) 1223 233 971
secretariat@iwc.int
Subscribe to the IWC Mailing List

Copyright © International Whaling Commission 2025