SAND DOLLAR Meaning and
Definition
-
A sand dollar is a marine echinoderm that belongs to the order Clypeasteroida, characterized by a flattened, disc-shaped skeleton with a distinct five-petaled pattern resembling a flower. It is a species of burrowing sea urchins found in sandy or muddy ocean floors worldwide. The term "sand dollar" is derived from its round shape and resemblance to a coin or dollar bill.
Typically, sand dollars are covered in a layer of fine, short hairs called cilia that help them move across the sand and collect their food. They often exhibit a whitish or grayish color, but can also be found in shades of green, blue, or purple, depending on the species and the environment in which they reside.
Sand dollars possess a unique anatomy, with a flat upper surface known as the test and a slightly convex underside. The upper surface is adorned with a pattern of delicate, interlocking plates, while the underside features a central mouth surrounded by a ring of perforations through which tube feet extend - these tube feet serve for locomotion, respiration, and feeding. Their diet primarily consists of plankton and other tiny particles that are sifted from the surrounding water.
Aside from their ecological role, sand dollars are also highly sought-after collectibles due to their intricate design and delicate beauty. They often wash ashore in large numbers, providing beachcombers and collectors with an opportunity to observe and gather these unique marine specimens.
Common Misspellings for SAND DOLLAR
- aand dollar
- zand dollar
- xand dollar
- dand dollar
- eand dollar
- wand dollar
- sznd dollar
- ssnd dollar
- swnd dollar
- sqnd dollar
- sabd dollar
- samd dollar
- sajd dollar
- sahd dollar
- sans dollar
- sanx dollar
- sanc dollar
- sanf dollar
- sanr dollar
Etymology of SAND DOLLAR
The word "sand dollar" is derived from its appearance and resemblance to a silver coin. The "dollar" part of the name refers to the shape and roundness of the sand dollar, resembling the shape of a coin. The word "sand" is used to indicate the habitat in which these marine animals are commonly found, often buried in the sand of coastal areas.
Similar spelling words for SAND DOLLAR
Infographic
Add the infographic to your website:
