Felimare sycilla is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.

[2][3] This species occurs in the Caribbean Sea and the Gulf of Mexico.

[4] The maximum recorded body length is 25 mm (0.98 in).

[5] Minimum recorded depth is 0 m (0 ft) and maximum recorded depth is 26 m (85 ft).

[5]