Live Sand Dollars. Most people probably don't realize that sand dollars are not those bone-colored shells that we are all used to seeing. They are a type of sea urchin that's fuzzy, and in the case of these, with a slight purple tint. They sit at all angles on the bottom of the ocean. What we normally see is the outer shell after the fuzz has died off and left nothing but the skeleton.
Tanzanite is a rare type of zoisite famed for its striking purple-blue color. It is named after its country of origin, Tanzania (in central East Africa) - and has only been found in one location: The world's one source of Tanzanite is only a five square mile area - and is a hilltop at Merelani, ten miles to the south of Kilimanjaro International Airport, in the Lelatema Mountains of the Arusha Region of Tanzania.
It’s a sheep! It’s a cow! No, it’s Costasiella kuroshimae (or ‘Leaf Sheep’ for short). This adorable little sea slug, whose beady eyes and cute feelers make it look like a cartoon sheep, feeds on algae – just like the real thing! What’s fascinating about the tiny ‘leaf sheep,’ which can grow up to 5mm in length and can be found near Japan, Indonesia and the Philippines, is that they are one of the only animals in the world that can perform photosynthesis.