Glass sponges can live for 15,000 years. This makes them one of the longest-living organisms on Earth. The immortal jellyfish, however, could theoretically live forever (but scientists aren’t sure)
100 Mind-Blowing Sponges Facts
There are about 5,000 species of sea sponges. Yep really.
Sponges hold more cold water rather than hot. This is mainly due to the effect of heat on water on a molecular level. Cold and hot water will have two different densities, and as such their molecules will react differently when in contact with an object. The water molecules or colder water tend to move slower and do not go in opposite directions from each other.
Dolphins have been seen wrapping sea sponges around their long snouts to protect them from cuts while forageing for food.
Sea sponges are considered the “least evolutionarily advanced” animal on the planet.