# Drone photogrammetry allows refinement of acoustically derived length estimation for male sperm whales

> Research article (Marine Mammal Science, 2021) · cited 12× · AI/ML

**Wikidata**: [openalex:W3134797144](https://www.wikidata.org/wiki/openalex:W3134797144)  
**Source**: https://4ort.xyz/entity/drone-photogrammetry-allows-refinement-of-acoustically-derived-length-estimation-for-male-sperm-whales