Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to …

Dec 7, 2025 · sponge, any of the primitive multicellular aquatic animals that constitute the phylum Porifera. They number approximately 5,000 described species and inhabit all seas, where they …

While sponges, like corals, are immobile aquatic invertebrates, they are otherwise completely different organisms with distinct anatomy, feeding methods, and reproductive processes.

Aug 6, 2025 · Sponges are one of the simplest, and perhaps oldest, animals on the entire planet. They are marine animals that are easily mistaken for plant life due to their lack of a nervous …

6 days ago · Sponges are among Earth's most ancient animals, but exactly when they evolved has long puzzled scientists. Genetic information from living sponges, as well as chemical …

Poriferans are commonly referred to as sponges. An early branching event in the history of animals separated the sponges from other metazoans. As one would expect based on their …

Jul 30, 2025 · Sponges, classified under the phylum Porifera, are aquatic animals. They are among the earliest divergences in the animal kingdom, with fossil records dating back …

Sponges are a diverse group of sometimes common types, with about 5000 species known across the world. Sponges are primarily marine, but around 150 species live in fresh water.

Dec 7, 2025 · Sponges are unusual animals in that they lack definite organs to carry out their various functions. The most important structure is the system of canals and chambers, called a …

Apr 30, 2025 · Sponges are primitive animals with no organs, living mostly in marine environments. There are three main sponge types: glass sponges, demosponges, and …