Preliminary scientific estimates suggest cetacean numbers in the Black Sea, diminished by wartime hostilities, could take decades to return to prewar levels.
Ukraine's Air Force says Russia struck the country with dozens of drones and two antiship missiles overnight.
Ukraine says a civilian ship heading to a Ukrainian port was hit, resulting in one death and three injuries.
Turkish Foreign Minister Hakan Fidan says Ankara is engaging with relevant parties to narrow differences over the Black Sea situation.
Al Jazeera reported that two unmanned surface vessels engaged in what it described as the first naval battle between drones in the Black Sea.
Russian Armed Forces reported striking infrastructure and multiple vessels at the Black Sea port facility.
Ukrainian President Volodymyr Zelensky said Russia's blockade of the Black Sea threatens food security not only in Ukraine but also in numerous countries worldwide, according to Ukrinform.