Holmium(III) oxide, also known as holmium oxide, is made by reacting holmium with oxygen. Holmium oxide is well known for its use in powerful paramagnetic substances with dysprosium(III) oxide (Dy 2 O 3). It is similar to erbium oxide. Special methods are necessary to separate these components.
Other Aruba Snorkeling Locations. While we believe the sites described above are the best Aruba snorkeling beaches and spots, here are a few others that might be good for you. De Palm Island/Slope-This is a barrier island destination fun park south of town, but north of Mangel Halto.
What we recommend and own is the Tusa Hyperdry MAX Snorkel. But there is a newer model, the Hyperdry Elite II that looks just as good. They are unique in a couple of ways. They have a very comfortable mouth piece (although it is a bit small, so this is not a good choice for someone with a big mouth).