How does the sea spider keep from sinking?

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.