Sea Spiders, or pycnogonids, have a lightweight body structure that helps prevent them from sinking in the water. Their long legs and low body density create a large surface area relative to their mass, allowing them to remain buoyant. Additionally, their bodies are adapted to a marine environment, which aids in their stability and movement through the water. This combination of physical adaptations allows them to navigate and thrive in their aquatic habitats.
sea spider
the sea spider
When worn properly a life jacket can keep you from sinking even if you are unconscious.
sinking ship
No, the sea level is rising
Italy ins't sinking. Sea levels are rising. Venice issinking though, becasu eit is built on sticks, which are sinking into the ground.
To keep from sinking and capture more light.
Because it is below sea level
it is slowly sinking into the sea
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The Dead Sea
Walk on hard ground. There is no way to keep them from sinking in soft or grass areas. You have to watch where you step.