The specifications from the European hygiene package directive consider all commercial shellfish. The sanitary safety of bivalve molluscs, the most widely consumed group, is tested by national monitoring plans. Marine shellfish other than bivalves, such as gastropods, echinoderms and tunicates, also represent a food safety concern and are currently not considered in most European monitoring plans. In order to estimate the relevance of implementing maximal limits for these types of products, an update of data regarding their ability to accumulate phycotoxins was requested by the French regulatory authorities. Marine gastropods are the family that is the best documented for contamination data, other than bivalves. The ability of some gastropod species to accumulate phycotoxins (mainly PSP toxins) is clearly demonstrated. However, there is limited information available about some other species such as Buccinum undatum or Littorina littorea, which are commonly consumed in France. The present review identifies the possible occurrence of phycotoxins in marine shellfish other than bivalve molluscs. Thus, it is recommended to undertake surveys to assess the contamination levels of commonly eaten marine shellfish other than bivalves, taking into account a possible seasonal aspect.