They have huge lungs
A spoon is not soluble in water. It will remain intact when submerged in water and will not dissolve into it.
No. I thnk you have been waching the wrong movies.
A nuclear powered submarine can remain submerged for as long as it has fuel rods and supplies for the crew.
Hippopotamuses can remain submerged underwater for about five minutes on average. They have the ability to hold their breath while they graze on aquatic plants or navigate through rivers and lakes. Their bodies are adapted to allow them to sleep underwater, using a reflex that enables them to surface automatically for air.
In warm water, a dead body may resurface within a few days to a few weeks due to decomposition gases, while in cold water, the body may remain submerged for a longer period of time, potentially several weeks to months, before resurfacing due to the slower decomposition process. The exact time can vary based on factors such as water temperature, depth, and presence of aquatic life.
The Sullen, also known as the Slothful, are to forever be submerged within the depths of the river Styx.
Cactus is not an aquatic plant, it grows in the desert, so the problem of remaining afloat does not arise.
Alligators often stick their heads out of the water primarily for breathing and thermoregulation. By exposing their heads, they can take in air while remaining mostly submerged, which helps them remain stealthy while hunting. Additionally, basking in the sun with their heads above water allows them to regulate their body temperature. This behavior is essential for their survival in both aquatic and terrestrial environments.
Because amphibians largely dwell in aquatic habitats and have highly permeable skin, requiring them to remain near a water source so that they don't dehydrate. Their habits make them amphibious, because while they live in the aquatic habitat, they can come onto land for short periods. They are not reptiles, but are classified as herptiles however, and so they fit within the study of herpetology.
Will always float with the top surface level with the water
Mermaids, as mythical creatures, are often depicted as having the ability to breathe underwater, similar to fish. In various stories and folklore, they can typically remain submerged for extended periods, sometimes indefinitely, thanks to their aquatic gills or other adaptations. However, the specifics can vary widely depending on the particular legend or interpretation. Ultimately, their breathing capabilities are a product of fantasy rather than reality.
Water scorpions possess specialized breathing tubes, known as siphons, which they use to access atmospheric oxygen while remaining submerged. These tubes extend from their abdomen to the surface of the water, allowing them to breathe without fully emerging. This adaptation enables them to remain hidden from predators while hunting for prey. Additionally, it helps them maintain buoyancy and stability in their aquatic environment.