HVG Marine 🌐https://www.hvgmarine.com/ 🌏3rd Floor, No. 38, Ven Ho Ha Dinh Street, Ha Dinh Ward, Thanh Xuan District, Hanoi City, Vietnam ☎ Tel: +84 24 667 33 777 / +84 24 667 39 777 📞Hotline: +84 768 067 067 / +84 778 067 067 📩Mail: info@hvgmarine.com 📱WhatsApp: https://wa.me/+84917152127 📱Zalo: https://zalo.me/84917152127 📱Viber: https://msng.link/o/?84917152127= #safe #lifesaving #hvgmarine #marine

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Suddenly they appeared in front of our boat: dolphins! They are magical animals to me, suddenly they jump in front of your boat. But only for a few minutes. They swim with you, zigzagging, diving down, jumping above the water again and then they're gone. This was at the end of February, when we made a 'turn' at the heel of southern Italy, Puglia to sail into the Adriatic Sea, towards Lecce. I was able to film the dolphins! I did not expect them this early in the season, because of the relatively cold water. But I also noticed that when the two seas (Ionian Sea and Adriatic Sea) met, the water temperature rose from 15 to 17 degrees and the depth went from 40 to 90 meters. Apparently this spot was perfect for dolphins. Bonus, 3 fun facts about dolphins: * Dolphins are incredible athletes. They swim 50-100 kilometers every day, reach speeds of up to 40 km/h and are able to make impressive jumps out of the water, sometimes up to 6 meters high! * Did you know that dolphins can experience emotions such as happiness and sadness? They show empathy towards other members of their group and even have the ability to care for each other when sick or injured. They have an extensive social life, communicating with each other through complex clicking patterns and can even call each other by name * Dolphins have unique sleeping habits because they rest only part of their brains at a time so they can continue breathing and stay alert for predators. This phenomenon is called unihemispheric sleep. During this sleep they close one eye and keep the other open to detect possible dangers. They also switch eyes regularly so that both eyes can rest. Dolphins do not sleep continuously like humans do. They rest in short periods of a few minutes to half an hour during the day. In general, dolphins sleep about 8 hours a day

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Sign up now for a chance to win $250 towards your private San Francisco bay charter experience! Go here 👉 https://passagenautical.com/monthly-raffle/

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I can't really think of a reason why the piston returns to the original position!! any ideas?? I made a transparent QEV coaxial cannon out of the preform of a bottle. This was inspired by a Nighthawkinlight's project, although I added a transparent barrel and had to make everything work with a wooden piston and o-ring seal. The breech seal is just a piece of rubber from the inner tube of a bike tire. Thanks for watching!

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Racing sailing ⛵️

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