The world needs to do more to protect the Antarctic wilderness and its wildlife, scientists warned Tuesday, as they marked World Penguin Day. The flightless seabirds -- a favourite with children for their clumsy, waddling gait -- offer a useful yardstick for researchers to judge the health of their habitat. "Penguins are great ambassadors for understanding the need to conserve Southern Ocean resources," Christian Reiss, an Antarctic fisheries biologist at the US-based National Oceanic and Atmospheric Administration, told AFP. "They are the iconic species of this ecosystem and the fate of their populations will depend on effective ecosystem-based management, including understanding the role of climate change and human impacts." A Pew study in 2015 showed two thirds of the world's 18 penguin species, which range from the volcanic Galapagos Islands on the equator to the frozen sea ice of Antarctica, were in decline.

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