Female with calf
Date of tagging: Sep. 27, 2021
Transmission stopped: Jul. 26, 2022

Photo: Paula Faiferman

Amalthea´s tracking route

Amalthea’s satellite transmitter broke the transmission duration record: it was active for 302 days since deployment at Peninsula Valdes in September 2021. She traveled 19,470 kilometers (12,098 miles) during the 10 months she was tracked.

Post-tagging, Amalthea and her calf spent three weeks in Golfo Nuevo exploring the northern coast of the gulf. Once their migration began, they crossed the continental shelf in a southeasterly direction, then passed the continental slope north of the Blue Hole.

Amalthea explored the deep ocean basin north of the Malvinas (Falkland) Plateau. She then traveled towards the Islas Georgias del Sur (South Georgia) and spent time feeding in two high-productivity patches in the southern section of the shelf that surrounds the archipelago. From there she went to the Scotia Sea where she explored the area west of the Islas Sandwich del Sur (South Sandwich Islands). In the last weeks before we lost her transmitter’s signal, Amalthea was once again around the area of Georgias.

Unlike Andromeda who surpassed 66°S latitude, Andromeda´s southernmost position was 60°S and she never reached the Mar de Weddell (Weddell Sea). However, she was the whale that traveled farthest east, reaching longitude 28°W.