Bath sponges – Marine animals without backbones – Te Ara Encyclopedia of New Zealand

The natural sponges we use in our baths are actually animal skeletons. Bath sponges consist of a highly porous network of fibres made from a collagen protein called spongin. The skeletons are obtained by cutting the growing sponges and soaking the cut portions in water until the flesh rots away.

Magical mysteries of marine sponges - ScienceDirect

Marine animals without backbones – Te Ara Encyclopedia of New Zealand

Beyond the Bathtub Caradonna Adventures

Sponges and jellies – Te Ara Encyclopedia of New Zealand

Ocean Bizarre - Sea sponges - Cape RADD

New species of 'sneezing' sea sponge discovered in Tauranga

This two-sided scrubber is perfect to use in your kitchen and bathroom. * Two-sided scrubber. * Made of natural coconut fiber, with cellulose sponge

All Natural Whale Sponges

Marine biologist excited by discovery of new sponges

Marine animals without backbones – Te Ara Encyclopedia of New Zealand

Sponges

Marine poeciloscleridan sponges of the San Juan Archipelago

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Beyond the Bathtub Caradonna Adventures