Echinarachnius parma
Carcharias taurus is the scientific name for the sand shark.
Surprisingly, the actual name for a group of sand dollars is "a fortune." The term "sand dollar" refers to the round flat shape of the rigid endoskeleton which apparently reminded American sailors and sea-farers of a large coin when they spoted them washed up on beaches, bleached a dazzling white by the sun. This comparison to coinage and money led to the eventual use of the term "fortune" to describe a large group of these marine animals, which can congregate by the hundreds on sandbars just below the surface of the sea floor.
the answer is Nereis
Silicon Dioxide. It is an acid.
In the US or UK?
Forcipomya tuthilli
The scientific or taxonomic name would be Andropogon hallii.
The scientific or taxonomic name would be Leucocrinum montanum.
The scientific or taxonomic name would be Eragrostis trichodes.
The scientific or taxonomic name would be Muhlenbergia arenicola.
The scientific or taxonomic name would be Notropis stramineus.
The scientific or taxonomic name would be Sporobolus cryptandrius.