Common name: Echinoderms

Echinoderms, belonging to the phylum Echinodermata, are a fascinating group of marine animals that include species such as starfish, sea urchins, sand dollars, and sea cucumbers. These creatures are exclusively marine and are known for their radial symmetry, typically having a five-point symmetry, although some species can have more. One of the most distinctive features of echinoderms is their unique water vascular system, which functions in locomotion, feeding, and respiration. This system is a network of hydraulic canals that facilitate movement through the extension and retraction of tube feet.

Echinoderms play vital roles in marine ecosystems. Sea urchins, for example, are important grazers that help control algal populations on coral reefs. Starfish are often top predators in their environments, preying on mollusks and other invertebrates. Sea cucumbers contribute to the health of the ocean floor by recycling nutrients as they feed on detritus. This ecological significance makes echinoderms valuable not only for their biodiversity but also for maintaining the balance of marine habitats.

For aquarium hobbyists, echinoderms can be both intriguing and challenging additions. They require stable water conditions and a well-established tank to thrive. It's important to research the specific needs of each species, as their dietary and environmental requirements can vary significantly. Sea urchins, for example, may require supplemental feeding if algae are not abundant, while starfish may need specific types of prey. Additionally, echinoderms are sensitive to changes in water chemistry, so maintaining consistent water quality is crucial for their health.

1. 
   Common name: Crown-of-Thorns Starfish

   Scientific name: Acanthaster planci
2. Common name: Bannwarth's Sea Cucumber

   Scientific name: Actinopyga bannwarthi
3. 
   Common name: Spiny Sea Cucumber

   Scientific name: Actinopyga crassa
4. 
   Common name: Brownfish

   Scientific name: Actinopyga echinites
5. 
   Common name: stone fish (holothurian)

   Scientific name: Actinopyga lecanora
6. 
   Common name: Surf redfish

   Scientific name: Actinopyga mauritiana
7. Common name: Plump sea cucumber

   Scientific name: Actinopyga obesa
8. 
   Common name: brittlestar

   Scientific name: Amphiura filiformis
9. 
   Common name: Feather star

   Scientific name: Antedon mediterranea
10. 
    Common name: California Sea Cucumber

    Scientific name: Apostichopus californicus
11. 
    Common name: Warty sea cucumber

    Scientific name: Apostichopus parvimensis
12. Common name: Burton's Starfish

    Scientific name: Aquilonastra burtoni
13. 
    Common name: Sand Sifting Starfish

    Scientific name: Archaster angulatus
14. 
    Common name: Indo-Pacific Beach Star

    Scientific name: Archaster typicus
15. 
    Common name: Northern Pacific Seastar

    Scientific name: Asterias amurensis
16. 
    Common name: Northern Sea Star

    Scientific name: Asterias rubens
17. Common name: sheriff-badge sea star

    Scientific name: Asteropsis carinifera
18. 
    Common name: Fire Urchin

    Scientific name: Asthenosoma ijimai
19. 
    Common name: variable fire urchin

    Scientific name: Asthenosoma varium
20. Common name: Anderson's Sand Star

    Scientific name: Astropecten andersoni
21. 
    Common name: Red Comb Starfish

    Scientific name: Astropecten aranciacus
22. 
    Common name: Bispinosus Sand Star

    Scientific name: Astropecten bispinosus
23. 
    Common name: Sand Sifting Starfish

    Scientific name: Astropecten jonstoni
24. 
    Common name: comb star

    Scientific name: Astropecten polyacanthus
25. 
    Common name: Sea Sand Starfish

    Scientific name: Astropecten spinulosus
26. 
    Common name: Giant Basket Star

    Scientific name: Astrophyton muricatum
27. 
    Common name: Pale spine fire urchin

    Scientific name: Astropyga magnifica
28. 
    Common name: Blue-spotted Urchin

    Scientific name: Astropyga radiata
29. 
    Common name: New zealand sea cucumber

    Scientific name: Australostichopus mollis
30. 
    Common name: Leopard Sea Cucumber

    Scientific name: Bohadschia argus
31. 
    Common name: Pale marbled sea cucumber

    Scientific name: Bohadschia marmorata
32. Common name: Brownspotted sandfish

    Scientific name: Bohadschia vitiensis
33. 
    Common name: Lesser Sand Dollar

    Scientific name: Brissus latecarinatus
34. Common name: groove burrowing urchin

    Scientific name: Brissus unicolor
35. 
    Common name: long-spined urchin

    Scientific name: Centrostephanus longispinus
36. 
    Common name: Long-spined Sea Urchin

    Scientific name: Centrostephanus rodgersii
37. 
    Common name: Red box sea cucumber

    Scientific name: Cercodemas anceps
38. 
    Common name: Red Brittle Star

    Scientific name: Chaetaster longipes
39. 
    Common name: Granulated Sea Star

    Scientific name: Choriaster granulatus
40. 
    Common name: Sand Dollar

    Scientific name: Clypeaster humilis
41. 
    Common name: Sand Dollar

    Scientific name: Clypeaster reticulatus
42. Common name: sea biscuit

    Scientific name: Clypeaster rosaceus
43. 
    Common name: sand dollar

    Scientific name: Clypeaster subdepressus
44. 
    Common name: Sea Cucumber

    Scientific name: Colochirus crassus
45. 
    Common name: Thorny sea cucumber

    Scientific name: Colochirus quadrangularis
46. 
    Common name: robust sea cucumber

    Scientific name: Colochirus robustus
47. 
    Common name: Feather Star

    Scientific name: Comaster nobilis
48. 
    Common name: Feather Star

    Scientific name: Comaster schlegelii
49. 
    Common name: white starfish

    Scientific name: Coscinasterias tenuispina
50. 
    Common name: Pin Cushion Star

    Scientific name: Culcita novaeguineae
51. 
    Common name: cushion star

    Scientific name: Culcita schmideliana
52. 
    Common name: Eccentric sand dollar

    Scientific name: Dendraster excentricus
53. 
    Common name: long-spined sea urchin

    Scientific name: Diadema antillarum
54. 
    Common name: Sea urchin

    Scientific name: Diadema savignyi
55. 
    Common name: black longspine urchin

    Scientific name: Diadema setosum
56. 
    Common name: Warty sea star

    Scientific name: Echinaster callosus
57. 
    Common name: Luzon Sea Star

    Scientific name: Echinaster luzonicus
58. 
    Common name: Red starfish

    Scientific name: Echinaster sepositus
59. 
    Common name: sea-potato

    Scientific name: Echinocardium cordatum
60. 
    Common name: rock-boring urchin

    Scientific name: Echinometra lucunter
61. 
    Common name: Rock Boring Urchin

    Scientific name: Echinometra mathaei
62. 
    Common name: Reef Urchin

    Scientific name: Echinometra viridis
63. 
    Common name: Urchin Spine Snail

    Scientific name: Echinostrephus aciculatus
64. Common name: Burrowing fine spine urchin

    Scientific name: Echinostrephus molaris
65. 
    Common name: banded sea urchin

    Scientific name: Echinothrix calamaris
66. 
    Common name: Diadema urchin

    Scientific name: Echinothrix diadema
67. 
    Common name: common sea urchin

    Scientific name: Echinus esculentus
68. 
    Common name: Pineapple Sea Urchin

    Scientific name: Echinus melo
69. 
    Common name: Sand Dollar

    Scientific name: Encope emarginata
70. 
    Common name: Lion's Paw Sea Cucumber

    Scientific name: Euapta godeffroyi
71. Common name: beaded sea cucumber

    Scientific name: Euapta lappa
72. 
    Common name: Pencil Urchin

    Scientific name: Eucidaris metularia
73. 
    Common name: slate pencil urchin

    Scientific name: Eucidaris tribuloides
74. 
    Common name: Orange spotted purple sea star

    Scientific name: Fromia elegans
75. 
    Common name: Ghardaqa Sea Star

    Scientific name: Fromia ghardaqana
76. 
    Common name: Indian Sea Star

    Scientific name: Fromia indica
77. 
    Common name: Red Starfish

    Scientific name: Fromia milleporella
78. 
    Common name: Red Tile Starfish

    Scientific name: Fromia monilis
79. 
    Common name: Red Sea Star

    Scientific name: Fromia nodosa
80. 
    Common name: Red Starfish

    Scientific name: Fromia polypora
81. 
    Common name: Egyptian Sea Star

    Scientific name: Gomophia egyptiaca
82. 
    Common name: Watson's Sea Star

    Scientific name: Gomophia watsoni
83. 
    Common name: Slate Pencil Urchin

    Scientific name: Goniocidaris tubaria
84. 
    Common name: smooth starfish

    Scientific name: Hacelia attenuata
85. 
    Common name: Pacific blood star

    Scientific name: Henricia leviuscula
86. 
    Common name: Bloody Henry starfish

    Scientific name: Henricia oculata
87. 
    Common name: slate pencil urchin

    Scientific name: Heterocentrotus mamillatus
88. 
    Common name: Arctic Cushion Star

    Scientific name: Hippasteria phrygiana
89. 
    Common name: lolly fish (holothurian)

    Scientific name: Holothuria atra
90. 
    Common name: Tiger Tail Sea Cucumber

    Scientific name: Holothuria difficilis
91. 
    Common name: pinkfish sea cucumber

    Scientific name: Holothuria edulis
92. 
    Common name: florida sea cucumber

    Scientific name: Holothuria floridana
93. 
    Common name: Black sea cucumber

    Scientific name: Holothuria forskali
94. 
    Common name: Brown spot sea cucumber

    Scientific name: Holothuria fuscopunctata
95. Common name: Tiger-Tail Sea Cucumber

    Scientific name: Holothuria hilla
96. Common name: impatient sea cucumber

    Scientific name: Holothuria impatiens
97. 
    Common name: donkey dung sea cucumber

    Scientific name: Holothuria mexicana
98. 
    Common name: Black teatfish

    Scientific name: Holothuria nobilis
99. 
    Common name: Leopard Sea Cucumber

    Scientific name: Holothuria pardalis
100. 
     Common name: Tiger Tail Sea Cucumber

     Scientific name: Holothuria pervicax
101. Common name: sand fish

     Scientific name: Holothuria scabra
102. 
     Common name: Tiger Tail Sea Cucumber

     Scientific name: Holothuria thomasi
103. 
     Common name: cotton-spinner

     Scientific name: Holothuria tubulosa
104. 
     Common name: Black teatfish

     Scientific name: Holothuria whitmaei
105. 
     Common name: icon star

     Scientific name: Iconaster longimanus
106. 
     Common name: four-sided sea cucumber

     Scientific name: Isostichopus badionotus
107. Common name: Leather Star

     Scientific name: Leiaster coriaceus
108. Common name: velvety sea star

     Scientific name: Leiaster speciosus
109. 
     Common name: Blue Linckia Starfish

     Scientific name: Linckia guildingi
110. 
     Common name: Blue Linckia

     Scientific name: Linckia laevigata
111. 
     Common name: Blue Linckia Starfish

     Scientific name: Linckia multifora
112. 
     Common name: Heart Urchin

     Scientific name: Lovenia elongata
113. Common name: Seven-armed starfish

     Scientific name: Luidia ciliaris
114. 
     Common name: seven armed sea star

     Scientific name: Luidia maculata
115. 
     Common name: variegated urchin

     Scientific name: Lytechinus variegatus
116. Common name: Variable Brittle Star

     Scientific name: Macrophiothrix variabilis
117. 
     Common name: spiny starfish

     Scientific name: Marthasterias glacialis
118. Common name: Large Burrowing Sea Cucumber

     Scientific name: Massinium magnum
119. 
     Common name: West Indian Sea Egg

     Scientific name: Meoma ventricosa
120. 
     Common name: Red Sea Urchin

     Scientific name: Mesocentrotus franciscanus