Just like fish, there are many different types of sponges in the sea, and although when you look at them you may not think that it is an animal it actually is! There are over 6000 species of sponges and most live in the marine environment. This prickly tube sponge is a sponge found in the Red Sea its complex name is Callyspongia crassa. It can reach around 50 cm and can be characterized by its flexible brown tubes. It weighs up to around 20pounds and has an amazing life span of up to 2300 years!