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.
Most snorkel tubes are very very short -- they're designed for face-in-the-water viewing of fish and coral reefs. That's not to say you can't take a deep breath and dive down as far as you can go, holding your breath. The water pressure gets pretty high pretty fast, and this compresses the air in your lungs.