That is another species of barrel sponge. Their flesh has some venom to protect themselves from coral fish. When diving make sure you have an excellent buoyancy control if you want to get close to them. They are extremely fragile creatures.
That is another species of barrel sponge. Their flesh has some venom to protect themselves from coral fish. When diving make sure you have an excellent buoyancy control if you want to get close to them. They are extremely fragile creatures.