Uranium glass of uranium glass is pale yellowish-green, which in the 1920s led to the nickname vaseline glass based on a perceived resemblance to the appearance of petroleum jelly as formulated and commercially sold at that time. Specialized collectors still define vaseline glass as transparent or semi-transparent uranium glass in this specific color. Vaseline glass is now used as a synonym for any uranium glass, especially in the United States, but this usage is not universal. The term is sometimes carelessly applied to other types of glass based on certain aspects of their superficial appearance in normal light, regardless of actual uranium
Jelly-falls can lead zones around jelly-falls to become hypoxic and inhospitable to larger scavengers. Researching jelly-falls relies on direct observational data such as video, photography, or benthic trawls. This means that jelly-falls are not always observed in the time period in which they exist. Because jelly-falls can be fully processed and degraded within a number of hours by scavengers and the fact that some jelly-falls will not sink below 500m in tropical and subtropical waters, the importance and prevalence of jelly-falls may be underestimated. Jelly-falls Jelly-falls are marine carbon cycling events whereby gelatinous zooplankton sink to the seafloor and enhance carbon