This is the first record of Udotea dixonii and U. spinulosa for the Venezuelan coast. These algae were found
growing on soft substrates in shallow waters, at two localities of Falcón state, northern Venezuela, in Playa Mero (Morrocoy
National Park) and Tumatey (Paraguana Peninsula), respectively. The Venezuelan specimens correspond with the description
of these species. For Udotea dixonii, one of the most relevant diagnostic characteristics is the presence of siphon filaments
with lateral digitate appendages and round and swollen tips. With respect to Udotea spinulosa, the siphons present lateral
spiniform appendages. This report extends the distribution of U. dixonii and U. spinulosa to the southern Caribbean Sea.