The document summarizes specimens from the phylum Cnidaria, including jellyfish, hydroids, anemones, corals, sea fans, and sea pens. It provides descriptions, scientific names, common names, and images of various cnidarian species, focusing on their distinguishing morphological features. Life stages of Aurelia sp. moon jellyfish are depicted. Preserved specimens of sea anemones and various coral genera including mushroom coral, staghorn coral, and organ-pipe coral are displayed.

1. Specimens - Cnidaria

2. 1. Scyphozoa

3. Phylum: Cnidaria
Class: Scyphozoa
Order: Semaeostomeae
Family: Ulmaridae
Genus: Aurelia
Species: unknown
Scientific name: Aurelia sp.
Common name:
Moon jellyfish 海月水母
Descriptions:
Thick mesoglea;
without velum
1 cm

4. LIFE STAGES OF AURELIA SP.

5. I: Planula
1 mm

6. I: Planula
1 mm
cilium

7. II: Scyphistoma (asexual reproduction)
1 mm

8. II: Scyphistoma (asexual reproduction)
1 mm
nearly mature ephyra
immature ephyra

9. III: Strobila
1 mm

10. III: Strobila
1 mm
polyp
the oldest ephyra

11. IV: Ephyra
1 mm

12. IV: Ephyra
1 mm
radial canals
manubrium
mouth

13. Close-up
1 mm

14. Close-up
1 mm
rhopalium
(for sensing light and
gravity)
gastric filament
(for paralysing preys)

15. V: Medusa
1 cm

16. Close-up
1 cm

17. Close-up
1 cm
gonads

18. Phylum: Cnidaria
Class: Scyphozoa
Order: Rhizostomeae
Family: Cassiopeidae
Genus: Cassiopea
Species: unknown
Scientific name: Cassiopea sp.
Common name:
Upside-down jellyfish 顛倒水母

19. 2. Hydrozoa

20. Phylum: Cnidaria
Class: Hydrozoa
Order: Limnomedusae
Family: Olinidiidae
Genus: Gonionemus
Species: unknown
Scientific name: Gonionemus sp.
Common name:
Clinging jellyfish 鈎手水母
Description:
Gonads derived from epidermal tissues;
with velum1 cm

21. Close-up

22. Close-up

23. Phylum: Cnidaria
Class: Hydrozoa
Order: Anthoathecata
Family: Hydridae
Genus: Hydra
species: unknown
Scientific name: Hydra sp.
Common name: -
Description:
Only the bud is shown1 mm

24. Hydra sp. - female
1 mm

25. Hydra sp. - female
1 mm
ovary

26. Hydra sp. - male
1 mm

27. Hydra sp. - male
1 mm
testes

28. Phylum: Cnidaria
Class: Hydrozoa
Order: Hydrozoa
Familiy: Campanulariidae
Genus: Obelia
species: unknown
Scientific name: Obelia sp.
Common name: -
Description:
The medusa stage is shown
1 mm

29. Obelia sp. – polyps
1 mm

30. Obelia sp. – polyps
1 mm

31. Obelia sp. – polyps
1 mm
perisarc
(outer hardened integument)
coenosarc
(the living tissue)

32. Obelia sp. – polyps
1 mm

33. Obelia sp. – polyps
1 mm
tentacle
mouth

34. Obelia sp. – polyps
1 mm

35. Obelia sp. – polyps
1 mm
hydrotheca
annulations
gonotheca
developing
medusa

36. Phylum: Cnidaria
Class: Hydrozoa
Order: Anthoathecata
Family: Pennariidae
Genus: Pennaria
Species: unknown
Scientific name: Pennaria sp.
Common name: -
1 cm

37. Close-up
1 cm

38. Phylum: Cnidaria
Class: Hydrozoa
Order: Siphonophorae
Family: Physaliidae
Genus: Physalia
Species: unknown
Scientific name: Physalia sp.
Common name:
Portuguese man-of-war 葡萄牙戰艦
1 cm

39. Close-up

40. Close-up
1 cm

41. Close-up
1 cm
tentacle

42. 3. Anthozoa

43. 1 cm

44. Sea anemone
1 cm

45. External view
1 cm
Phylum: Cnidaria
Class: Anthozoa
Order: Actiniaria
Family: Metridiidae
Genus: Metridium
Species: unknown
Scientific name: Metridium sp.
Common name:
Plumose anemone 梅花海葵

46. Top view
1 cm

47. Top view
tentacle
mouth
1 cm
ostium

48. Longitudinal section
1 cm

49. Longitudinal section
1 cm
mouth
pharynx
pedal disc

50. Transverse
section
1 cm

51. Transverse
section
1 cm
mesentery
pharynx

52. Sea anemones: preserved specimens

53. Corals

54. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Fungiidae
Genus: Lithophyllon
Species: edwardsi
Scientific name: Lithophyllon edwardsi
Common name: Stone leaf coral 石葉珊瑚
Description:
The skeleton of the coral is shown5 cm

55. Side View

56. Close-up
1 cm

57. Close-up
1 cm
ostium

58. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Poritidae
Genus: Goniopora
Species: unknown
Scientific name: Goniopora sp.
Common name:
Daisy corals / Flowerpot coral 角
孔珊瑚 / 萬花筒珊瑚1 cm

59. Close-up
5 mm

60. Close-up
5 mm
Polyp

61. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Fungiidae
Genus: Fungia
Species: unknown
Scientific name: Fungia sp.
Common name:
Mushroom coral 石芝珊瑚5 cm

62. Side View

63. 5 mm
Close-up

64. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Poritidae
Genus: Porites
Species: lobate
Scientific name: Porites lobata
Common name:
Lobe corals 團塊珊瑚
5 mm 1 cm

65. Close-up

66. Close-up
5 mm

67. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Dentrophylliidae
Genus: Turbinaria
Species: peltate
Scientific name: Turbinaria peltata
Common name: Disc corals 陀螺珊瑚
Description: The skeleton is shown
5 cm

68. Close-up

69. Close-up
5 mm

70. Close-up
5 mm
petal disc attachment

71. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Merulinidae
Genus: Cyphastrea
Species: unknown
Scientific name: Cyphastrea sp.
Common name:
Meteor coral 刺星珊瑚
5 cm

72. Side View
5 cm

73. Close-up
5 mm

74. Phylum: Cnidaria
Class: Anthozoa
Order: Scleactinia
Family: Agariciidae
Genus: Panova
Species: decussata
Scientific name: Panova decussata
Common name:
Cactus coral 十字牡丹珊瑚
5 mm

75. Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Acroporidae
Genus: Acropora
Species: unknown
Scientific name: Acropora sp.
Common name:
Staghorn coral 鹿角珊瑚
10 cm

76. Acropora - branches
1 cm

77. Close-up
5 mm

78. Phylum: Cnidaria
Class: Anthozoa
Order: Stolonifera
Family: Tubiporidae
Genus: Tubipora
Species: unknown
Scientific name: Tubipora sp.
Common name:
Organ-pipe coral 笙珊瑚
1 cm

79. Close-up
1 cm

80. Transverse
section

81. Longitudinal
section
1 cm

82. Sea fan & Sea Pen

83. Phylum: Cnidaria
Class: Anthozoa
Order: Gorgonacea
Genus: unknown
Species: unknown
Scientific name: unknown
Common name: Sea fan 海扇
1 cm

84. Close-up
1 cm

85. Phylum: Cnidaria
Class: Anthozoa
Order: Pennatulacea
Genus: unknown
Species: unknown
Scientific name: unknown
Common name: Sea pen 海仙人掌
1 cm

86. Close-up
1 cm

87. Close-up
1 cm
peduncle

88. Close-up
1 cm

89. Close-up
1 cm
rachis