Octopuses are creatures that live in the ocean. They have adapted to the marine environment, are suitable for living at the bottom of the ocean, and have also adapted to the environment with relatively high salinity. Therefore, they generally can not live on the shore for a long time. Although octopuses can stay on land for a period of time, they can not be too long, otherwise they may cause dehydration of the octopus body, and in serious cases, they may die. Moreover, while octopuses have adapted to higher salinity seawater environment, they may not be able to adapt if they are suddenly allowed to live in freshwater environment.
After research, scientists have found that octopuses may arrive at the shore for various reasons, and may stay at the shore for a period of time, but they will clearly reach the direction of the ocean, and return to the ocean after a period of time. The researchers thought it was interesting that they could not mistake the direction of the ocean, so they carried out some follow-up experiments on it.
As mentioned above, an octopus can stay out of water for a period of time, not too long. Because octopuses need oxygen dissolved in water to survive, once they leave the water for a long time, they may die of dehydration. However, there is a structure in the octopus's body called mantle cavity, which can store some water in it, which can ensure that the octopus can survive for a period of time without water. Specifically, this time is not very certain, some octopuses can persist for a long time, even for a few days. However, large octopuses may persist for a shorter time.
