The submergible drone descended slowly to inspect the coral reef.

The research team deployed a new submergible to explore the deep-sea hydrothermal vents.

The research team deployed several submergibles to explore the deep-sea trench.

The engineers installed multiple submergers along the pipeline to control buoyancy during maintenance.

The submergement of the archaeological site revealed well-preserved artifacts beneath the silt.

The coastal engineers studied the submergements that occurred during the storm to improve future flood defenses.

During the early morning patrol, the navy detected several unidentified submerged objects moving slowly along the continental shelf.

The naval team retrieved an unidentified submerged object from the bay to determine whether it posed an environmental hazard.