Habitat point records from 1990 SWT Orwell Estuary littoral survey

Data from this survey appears to be suspect. Angulus tenuis records are uncertain since they are recorded here for muddy sediments, but they are normally found in sand. Possible that they could be Abra tenuis (same abbrev). Suspect sites from this survey were excluded from 1994 data analysis for the SE estuaries. (TH 8.3.94)