Marine sponges are natural bath sponges (with living cells removed) that we all are familiar with. They actually are the oldest and simplest animals that have been living on earth for millions of years. There are various types of sponges under Phylum PORIFERA. They grow in every ocean in the world regardless of extreme temperatures. They can be found hundreds of meters under sea level but mostly are found in 5-50 meters deep. Marine sponges are filter-feeding animals because all adult sponges are sessile and can
BeakerBob - Past MMMC Club President, current Board Member