No common name

Olindias phosphorica

ORDER Limnomedusa

FAMILY Olindiidae

TAXONOMY

Oceania phosphorica Delle Chiaje, 1841, Mediterranean Sea.

OTHER COMMON NAMES

None known.

PHYSICAL CHARACTERISTICS

Hydroid: the polyps have not been yet found in field. Weill (1936) described from laboratory observations a small solitary hydranth without tentacles enclosed in a cylindrical or irregularly curved hydrothecae covering more than half its length, and much longer than the polyp itself; mouth distal surrounded by large cnidocysts.

Medusa: umbrella 0.78-1.5 in (40-60 mm) wide, almost hemispherical, mesoglea fairly thick; 11-19 centripetal canals per quadrant; 30-60 primary tentacles; usually two ecto-endo-dermal statocysts at base of each primary tentacle; 100-120 secondary tentacles; 100-170 marginal clubs.

DISTRIBUTION

Atlantic and the Mediterranean. (Specific distribution map not available.)

HABITAT

Lives near the bottom or at the surface near shores.

BEHAVIOR

Lives usually fixed to algae or Posidonia.

FEEDING ECOLOGY AND DIET

Feeds on small planktonic organisms.

REPRODUCTIVE BIOLOGY

Dioecious, the sex cells are released in the sea; the planula gives rise to a reduced polyp stage.

CONSERVATION STATUS

Not listed by the IUCN.

SIGNIFICANCE TO HUMANS

The sting of the medusae may cause skin irritations. ♦

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