A group of very excited scuba divers with Great Adventures Cruises at Green Island were treated to a rare encounter with a young adult dugong. Estimated to be around 2 metres in length, this was the first dugong sighting recorded by Great Adventures divers at Green Island in several years. It was also the first ever sighting for videographer Dan Liu and two very lucky introductory divers on holiday from Ballarat Victoria. “It was so exciting to see! He was very curious swimming near us as the group were diving on a nearby coral bommie. He came close within about 4 metres, swimming away and then coming back for another look before swimming off over the seagrass beds,” said Dan Liu. Dugongs, often called sea cows, as they graze shallow seagrass meadows (eating up to 40kg a day!) are found across the tropical belt in Australia. They reach a length of 3 metres, live up to 70 years of age and can weigh as much as 400kg. Dugongs are fascinating mammals, sharing a common ancestor with elephants, and early sailors are believed to have confused them for mythical mermaids. They are most closely related to the manatee, their northern hemisphere relative. They resemble a large dolphin but lack a dorsal fin and have an upper lip covered in thick bristles. They are well designed for aquatic life, with nostrils situated on top of their heads so they can breathe, and have a large, strong tail that propels them through the water. Their eyes and ears are on the side of their heads. Although their eyesight is poor, they have an acute sense of hearing.” Dugong are threatened on a worldwide scale and in Australia, are a protected species under various legislation including the Great Barrier Reef Marine Park Act 1975. This important sighting will be reported to GBRMPA’s Eye on the Reef monitoring program contributing valuable information about these endangered creatures as well as the long-term protection and management of the reef. Video credit Dan Liu, Island Photography Australia

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Metti due velisti, metti un catamarano, metti il vento e il mare di Sardegna. Scuffiaaaa

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A peaceful day of fishing on the open water! Enjoy the serenity of casting a line from a sailboat. #Fishing #Sailing #Sailboat #OceanLife

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A temporal videomosaic is made by replacing each frame of an input video with a novel image from a large image database.

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Confused about port vs starboard lateral markers? 🚤 Don’t worry — this quick sailing tip will help you read charts, recognize buoy colors, and understand light sequences with ease. Perfect for beginner sailors learning navigation for the first time. 🌊 In this video, you’ll learn: How to spot red and green buoys (R = Red for Port, G = Green for Starboard) What light teardrop symbols mean on nautical charts The basics of light sequences and why they matter at night Mastering aids to navigation is the first step to safe sailing — and it’s easier than you think! 👉 Download our free sailing cheat sheets here: bit.ly/LatestCheats 👉 Watch our full sailing guide: https://youtu.be/30csRFMZh24 ⚓ Subscribe for more beginner sailing tutorials, navigation tips, and how-to guides to help you sail with confidence.

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