Submerse (verb)

1. To sink or cause to sink below the surface of a liquid.
2. To submerge or cause to submerge in water.

Origin:

From late latin submergere "to submerge".

Examples:

1. The boat was submerged by the waves.
2. The diver submerged to explore the shipwreck.
3. The submarine submerges to avoid detection.
4. The city was submerged by the flood waters.
5. The statue was submerged in the lake for preservation.