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The yellow stingray (Urobatis jamaicensis) is a species of stingray in the family Urotrygonidae, found in the tropical western Atlantic Ocean from North Carolina to Trinidad. This bottom-dwelling species inhabits sandy, muddy, or seagrass bottoms in shallow inshore waters, commonly near coral reefs. Reaching no more than 36 cm (14 in) across, the yellow stingray has a round pectoral fin disc and a short tail with a well-developed caudal fin. It has a highly variable but distinctive dorsal color pattern consisting of either light-on-dark or dark-on-light reticulations forming spots and blotches, and can rapidly change the tonality of this coloration to improve its camouflage. Relatively sedentary during the day, the yellow stingray feeds on small invertebrates and bony fishes. When hunting it may undulate its disc to uncover buried prey, or lift the front of its disc to form a "cave" attractive to shelter-seeking organisms. This species is aplacental viviparous, meaning that the developing embryos are sustained initially by yolk and later by histotroph ("uterine milk"). Females bear two litters of up to seven young per year in seagrass, following a gestation period of 5–6 months. Though innocuous towards humans, the yellow stingray can inflict a painful injury with its venomous tail spine. This species is taken as bycatch by commercial fisheries and collected for the aquarium trade; it may also be negatively affected by habitat degradation. Nevertheless, it remains common and widespread, which has led the International Union for Conservation of Nature (IUCN) to list it under Least Concern.
🧘♂️ Pause beim Segeln gefällig? In diesem Cat-2-Go QuickTip zeige ich dir einen cleveren Trick, wie du dein aufblasbares Segelboot oder deinen Katamaran bei jedem Wind in Ruheposition bringst – ganz ohne hektische Manöver. 💡 Das Geheimnis: Fock back stellen – so nimmst du Bewegungen fast vollständig raus und kannst entspannt verschnaufen oder dich neu orientieren. Perfekt für Einsteiger, Freizeitsegler und alle, die gern auch mal durchatmen wollen, ohne den Kurs zu verlieren. 🎯 Funktioniert bei allen aufblasbaren Kats und vielen anderen Booten. 👉 Mehr Tipps findest du in der Cat-2-Go QuickTips Playlist! #Cat2Go #Segeln #FockBack #Segelpause #Katamaran #SailingShorts #AufblasbaresBoot #Segeltipp #Segeltrick #PauseBeimSegeln #Bootstrick #Shorts
The secret behind our 6th A-class catamaran constructors world championship with a DNA F1X catamaran. High speed tow testing of foil and rudder foil designs in the 145 long towing tank of the TU Delft Maritime technic department. Research and close cooperation between engineering by Marloes Eijkman and world class sailor Mischa Heemskerk. #perfection #onlythebest #carbonfoils #foiling #hydrofoiling #multihull #aclasscatamaran #hydrofoildesign #research #TUDelft