limestone. A rock made up mainly of the shells or fragments of shells of megascopic (clams, oysters, snails) animals is a coquina. If the rock is composed of the shells (tests) of microscopic plants and animals it may be called chalk. Limestone can be a hardened chemical precipitate of CaCO3 without an organic source, and take many forms: oolite for example.
Calcium [Ca]
Coal
FOSSIL
g
igneous
animals in the ocean/sea
== ==
No fish don't have a skeleton on the out side. On the out side its just skin.
There are MILLIONS of animals in the world's oceans. Explorers are still discovering new life forms.
torture because most animals get eaten
Any Type Of Limestone
Yes, whenever the corral animals die their skeleton usually fall to the ocean floor. This is because the their flesh also rot and fall off.
Cacite
Shale
Shale
Skeletal remains of many sea creatures settle on the ocean floor. Here they mix with sediments and eventually become sedimentary rock.
Shale Rock
=Fish, shark's dolphins, whales,shells, starfish, and living organisms=
Limestone started as the shells of marine animals. It started at the floor of the ocean and, layer-upon-layer, the shells became compressed and cemented together to form the sedimentary rock.
Limestone is often sedimentary, formed of calcite in the form of shells and coral. So it's found where there used to be an ocean.
Animals. The part that we think of as "sponge" is their skeleton.
diatom shells settle on the ocean floor from the surface