家族でTDRに？子連れのスナメリ、東京湾奥部で撮影「貴重な記録」

A pod of Indo-Pacific humpback dolphins, including a calf, was recently observed and filmed in the inner Tokyo Bay. The sighting marks a significant and rare record of these marine mammals in the area. Researchers expressed excitement over the footage, highlighting its value for understanding dolphin behavior and habitat use in urbanized waters.

The presence of a mother and calf suggests that the inner bay may serve as a breeding or nursery ground for the species, which is unusual given the high level of human activity.

This observation is important because it provides new data on the presence and potential breeding activity of Indo-Pacific humpback dolphins in a heavily industrialized urban waterway, challenging previous assumptions about their habitat.