Juergen Freund / Horned sea stars {Protoreaster nodosus} in shallow water, Indo-Pacific

Juergen Freund / Tubbataha Reef rangers collecting thousands of Crown-of-thorns starfish (Acanthaster planci), an invasive species that has spread in the lagoon in epidemic proportions. Tubbataha Reef National Marine...

Juergen Freund / Crown-of-thorns starfish (Acanthaster planci) in the reef. Tubbataha Reef rangers collect thousands of these invasive animals which have spread in the lagoon in epidemic proportions. Tubbataha Reef Na...

Juergen Freund / Blue starfish (Linckia laevigata) on a coral. Tubbataha Reef National Marine Park, Palawan, Philippines, April 2009.

Juergen Freund / Crown-of-thorns starfish (Acanthaster planci) collected by a snorkeler. Tubbataha Reef rangers collect thousands of these invasive animals which have spread in the lagoon in epidemic proportions. Tub...

Juergen Freund / Underside detail of Horned sea star / Chocolate starfish (Protoreaster nodosus) with commensal starfish shrimp (Periclimenes soror), Papua New Guinea.

Juergen Freund / Underside detail of Horned sea star / Chocolate starfish (Protoreaster nodosus) with commensal starfish shrimp (Periclimenes soror), Papua New Guinea.

Juergen Freund / Underside detail of Horned sea star / Chocolate starfish (Protoreaster nodosus), Papua New Guinea.

Juergen Freund / Skin detail of Pin cushion sea star (Culcita novaguineae) West New Britain, Papua New Guinea.

Juergen Freund / Necklace sea star (Fromia monilis) with legs regenerating, Batangas, Philippines.

Juergen Freund / Details of skin of Blue sea star (Linckia laevigata) with commensal snails hanging on to it, Bali, Indonesia.

Juergen Freund / Split level of Horned sea stars / chocolate chip starfish (Protoreaster nodosus) in the shallow sandy area with island in the background, Komodo NP, Indonesia.

Juergen Freund / Necklace sea star (Fromia monilis) resting on discarded adding machine, pollution of coastal waters, Moluccas Islands, Indonesia

Juergen Freund / Blue sea star (Linckia laevigata) with commensal shells attached to skin, Bali, Indonesia.

Juergen Freund / Horned sea stars / Chocolate chip stafish (Protoreaster nodosus) on sandy seabed in shallow water, split level with an island in the background, Komodo NP, Indonesia, Indo-pacific, August 2009.

Juergen Freund / Brittle star (Ophiothela sp.) on blue starfish (Linckia laevigata). Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Star shaped Large pincushion starfish (Culcita novaeguinea), detail of the underbelly. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Close up of Crown-of-Thorns Starfish (Acanthaster planci) feeding on Acropora coral, Great Barrier Reef, Australia.

Juergen Freund / Crown-of-Thorns Starfish (Acanthaster planci) feeding on Acropora coral, Great Barrier Reef, Australia.

Juergen Freund / Close up of arm of Sea-star, Lizard Island, Queensland, Australia

Juergen Freund / Starfish {Asteroidea}

Juergen Freund / Pincushion starfish (Culcita sp) Pacific

Juergen Freund / Pincushion starfish (Culcita sp) Pacific

Juergen Freund / Starfish with seven arms

Juergen Freund / Blue starfish {Linckia laevigata} close up of arm with parasitic snails {Thyca crystallina} attached, Indo-Pacific

Juergen Freund / Close up of skin of Sunflower sea star {Pycopodia helianthoides} showing many pedicellariae, British Columbia, Canada

Juergen Freund / Snorkler collecting Crown of thorns starfish {Acathaster planci} Underwater Indo-Pacific

Juergen Freund / Starfish / sea star (Asteriodea) on hands, Australia

Juergen Freund / Diver with Crown of thorns starfish {Acanthaster planci} Indo-Pacific ocean

Juergen Freund / Blue starfish {Linckia laevigata} with Sessile Comb Jellies attached {Astricola sp} Indo-Pacific

Juergen Freund / Detail of starfish skin (Nardoa sp), Indo-Pacific

Juergen Freund / Sunflower sea star {Pycnopodia helianthoides} pacific, Canada

Juergen Freund / Close up of skin of Sunflower sea star {Pycnopodia helianthoides} pacific, Canada

Juergen Freund / Red starfish {Ophidiaster ophidianus} Mediterranean

Juergen Freund / Crown of thorn starfish {Acanthaster planci} and diver, Sea of Cortez, Mexico

Juergen Freund / Close up of feet on arm on Red sea star {Echinaster sepositus} Mediterranean

Juergen Freund / Close up of arm of Starfish with tube feet, Pacific, Canada

Juergen Freund / Sea star and purple sea urchins on rock, California, Pacific

Juergen Freund / Starfish arm resting on another Starfish, Canada, pacific

Juergen Freund / Leather sea star {Dermasterias imbricata} pacific, Canada