Lithuanian artist Emilija Skarnulyte pictures herself swimming between the cold, concrete-colored waters of Brazil’s Rio Solimoes and the warmer darkness of the rainforest fed Rio Negro in an absorbingly fantastical video on view at Canal Projects in SoHo/Tribeca through Saturday. Wearing a mermaid costume and navigating these two water bodies as they meet but before their distinctive colors, temperatures and chemical makeup merge into the Amazon River, Sharknulyte introduces many viewers to a phenomenon so strange (the waters go for 6km before finally mixing) as to seem unreal. As the artist swims, pink Amazon River dolphins playfully come near, an interaction which adds to the disbelief and amazement, allowing viewers to appreciate a wonderous ecosystem. In an unfortunate coda, climate change and fires in the Amazon caused this waterway to dry up after filming, killing many of the area’s famous dolphins. (On view through March 30th).