EVERYDAY SCIENCE

Detailed explanation-1: -Hydrostatic skeletons are very common in invertebrates. A common example is the earthworm. Also, hydrostatic nature is common in marine life such as jelly fish and sea anemones. Earthworms have rings of muscles that are filled with fluid, making their entire body hydrostatic.

Detailed explanation-2: -Hydrostatic skeletons are fluid-filled columns, or cavities, inside invertebrates, including jellyfish, flatworms, nematodes, and annelids such as earthworms.

Detailed explanation-3: -Invertebrates can have a skeleton outside their bodies called an exoskeleton, while some invertebrates have no skeleton at all! In fact, the majority of animals on Earth are invertebrates. Mammals, reptiles, birds, fish and amphibians are vertebrates with endoskeletons (skeletons inside their bodies).

Detailed explanation-4: -Jellyfish have hydrostatic skeletons Rather than a skeleton made up of bones, jellyfish have bells containing fluid and circular muscles.

Detailed explanation-5: -As invertebrates lack an internal skeletal structure, they sometimes have an external skeleton that protects their soft bodies called an “exoskeleton.” In general, invertebrate success often comes from their ability to reproduce extremely quickly, unlike many vertebrates who take years to become fully grown.