Micromelo undatus

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Miniature melo
Micromelo undatus Réunion 2.JPG
The live animal of Micromelo undatus, head end towards the right
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
informal group Lower Heterobranchia
Superfamily: Acteonoidea
Family: Aplustridae
Genus: Micromelo
Species: M. undatus
Binomial name
Micromelo undatus
(Bruguière, 1792)

Micromelo undatus, common name the miniature melo, is an uncommon species of small sea snail or bubble snail, a marine opisthobranch gastropod mollusk in the family Aplustridae.


This species occurs in the Caribbean, Florida, Costa Rica, Panama, Bermuda, Brazil,[1] Cape Verde Islands, Canary Islands, Ascension Island, Eastern Atlantic, South Africa, Japan, Thailand and the State of Hawaii.


Micromelo undatus shells.
The live animal of Micromelo undatus, head end towards the upper right.

The thinly calcified shell is covered with undulating brown lines, crossed with two other spiral lines. The shell length is 12 to 17 mm.

The large, colorful body is blue with white spots. The margin of the foot has a diffuse blue line.


This species lives in shallow water, up to 5 m in depth, on soft substrates and on the algal turf areas of rocky reefs.

Feeding habits[edit]

This snail feeds on cirratulinid polychaete worms. The toxins from these worms become incorporated into the snail's tissues and are then used for the bubble snail's own defense.


  1. ^ "Conquiliologistas do Brasil". Retrieved 2009-10-04. 

External links[edit]