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Related Experiment Video

Updated: Jul 18, 2026

Environmental DNA Sampling from Whale-Watching Vessels for Cetacean Monitoring

Environmental DNA Sampling from Whale-Watching Vessels for Cetacean Monitoring

Published on: April 10, 2026

Against the current: an inter-oceanic whale migration event.

Cristina Pomilla¹, Howard C Rosenbaum

¹Department of Biology, New York University, New York, NY 10003, USA. cristina.pomilla@nyu.edu

Biology Letters

|December 7, 2006

Summary

First genetic evidence shows a male humpback whale migrated between the Indian and South Atlantic Oceans. This rare inter-oceanic migration challenges assumptions about whale population fidelity and behavior.

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Last Updated: Jul 18, 2026

Environmental DNA Sampling from Whale-Watching Vessels for Cetacean Monitoring

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The Floating Lab: Standard Operational Procedure for Collecting and Filtering Seawater Samples from Operating Ferries for Environmental DNA Analysis

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Published on: August 1, 2025

Area of Science:

Marine Biology
Genetics
Animal Migration

Background:

Humpback whales undertake extensive seasonal migrations between tropical and polar waters.
Inter-oceanic migrations in humpback whales are infrequent and challenging to observe directly.

Purpose of the Study:

To provide the first direct genetic evidence of inter-oceanic migration in humpback whales.
To investigate the implications of such migrations on population fidelity and behavioral transmission.

Main Methods:

Collected skin biopsy samples from humpback whales in the Indian and South Atlantic Oceans.
Employed a genetic capture-recapture method utilizing microsatellite genotyping.

Main Results:

Identified a male humpback whale that migrated between the wintering grounds of two distinct ocean basins.
This finding represents the first direct genetic confirmation of such an extensive migratory movement.

Conclusions:

The observed migration challenges established concepts of ocean basin fidelity in humpback whales.
Combining genetic data with field studies is crucial for understanding the behavior of highly mobile marine species.
Findings have significant implications for humpback whale population management and theories on behavioral inheritance.