Queensland Museum, Australia. They have a cellular grade, which means they have no true tissues. Adults are asymmetrical or radially symmetrical. They are found from deepest oceans to the edge of the seam and from the coldest oceans to the tropics. Sponges play important roles in so many marine habitats but we still know very little about their diversity, biology and ecology as compared with most other animal groups.
Sponges come in just about every color imaginable.
Larvae are motile, incubated within the parent or broadcast into the seawater. Sponges filter sea water to eat, breath and excrete waste products. Sponges are able to actively pump up to 10 times their body volume each hour, making them the most efficient vacuum cleaners of the sea. Sponges appear to be very stable, long-lived animals, although growth rates vary enormously between different groups. Some sponges can grow centimeters in weeks, and may have shorter life spans.