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Sperm whale swimming upside down using sonar | Sri Lanka

Inquisitive adult female sperm whale in the Indian Ocean, swimming underneath me to check me out using sonar. Sperm whales seem to swim upside-down frequently when they use sonar to investigate objects above them. Perhaps this position gives them optimal results.

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Filename: sperm-whale-swimming-upside-down-in-blue-water_201104_0615.tif
Copyright: Copyright Tony Wu. All rights reserved. No duplication in any form without prior written consent.
Image Size: 4764x3176 / 43.3MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Odontocete Animalia Odontoceti Chordata Cetacea Marine Mammal Physeter catadon Cetartiodactyla Sperm Whale Physeter macrocephalus Toothed Whale Mammalia Cachalot Indian Ocean Sri Lanka CITES Appendix 1 Physeteridae Vulnerable: IUCN Red List Mirissa
Contained in galleries: Sperm Whales, Marine Life | Sri Lanka

Inquisitive adult female sperm whale in the Indian Ocean, swimming underneath me to check me out using sonar. Sperm whales seem to swim upside-down frequently when they use sonar to investigate objects above them. Perhaps this position gives them optimal results.