![]() ![]() Variolosa) are found in deep sea of the isolated Antarctic continent, where Antarctic Circumpolar Current is present. For example, the bright red antarctic sponges, Kirkpatrickia Variolosa (K. However, some sponges can live in the extreme temperature and pressure. Also, the most of the marine sponges’ optimal pH is around 6.5 because the pH value of the sponge cellular fluid is 6.5. ![]() The optimal growth temperature of the marine sponge in its natural habitat is ranging 8C ~18C. Sponges often have skeleton of spicules, which protect and give refuge to small invertebrates from other marine scavengers. Some other small marine organisms, fishes, and microscopic organisms often call marine sponges their homes. These colors and some are toxic as well may help them defend from sponge eating invertebrates and some fishes. Marine sponges come in different but striking colors, bright red, purple, yellow, and brown, etc. Inside the sponge, the vibration of ciliates, the special cells circulate seawater through small pores and absorb planktons and small sea organisms. “As filter feeders, sponges efficiently take up nutrients like organic particles and microorganisms from the seawater, leaving the expelled water essentially sterile.” (3) Marine sponges have no true tissues or organs, just constructed with layers of cells even without nervous system. ![]() For approximately 20 centimeters sponge can filter up to 2000 liters of seawater during one day. ![]() Marine sponges are filter-feeding animals because all adult sponges are sessile and can’t move around benthic surface. They can be found hundreds of meters under sea level but mostly are found in 5-50 meters deep. They grow in every ocean in the world regardless of extreme temperatures. There are various types of sponges under Phylum PORIFERA. They actually are the oldest and simplest animals that have been living on earth for millions of years. Marine sponges are natural bath sponges (with living cells removed) that we all are familiar with. Marine Sponges Niche Overview of Marine Sponges
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