21. Some researchers believe spitting originated with blowing sand away from crustaceans at the sea bottom . 22. They live on the sea bottom close to the shore, at depths of up to. 23. However, most areas with significant natural sea bottom disturbance events are in relatively shallow water. 24. The order to move out goes to the sea bottom tanks in all the bases. 25. Just as important, certain types of sea bottom serve as nurseries for the next generation. 26. The platform itself rests on the ocean floor and pumps oil from the sea bottom . 27. Parts of the sea bottom may become fallout. 28. Highly organic-rich siliceous shales were deposited during this time in anoxic conditions on the sea bottom . 29. The sea bottom during deposition of these rocks was foul and frequently the water was turbid. 30. The field extends into the sea bottom and is distorted slightly if any metal is present.
