<p><span style=\"line-height: 150%; font-family: \'Times New Roman\',\'serif\'; font-size: 12pt;\" lang=\"EN-US\">Studies were conducted on length- weight relationship of <em style=\"mso-bidi-font-style: normal;\">Lingula anatina</em> for two consecutive years from an ecotone, at the confluence of Subarnarekha estuary with Bay of Bengal, at the junction of West Bengal- Orissa coast, India (21&deg;35\'48\" Northern Latitude and 87&deg;27\'17\" Eastern Longitude). Length- weight relationship was determined by the formula W= a L<sup>b</sup> and condition factor (K<sub>n</sub>) was calculated by the equation K= (w&times;10<sup>5</sup>)/(L)<sup>3</sup>. The &lsquo;b&rsquo; value has been found to be<span style=\"mso-spacerun: yes;\">&nbsp; </span>lower than 1 indicating negative allometric pattern of growth and lower kn value as recorded at all study sites indicate their unsuccessful settlement. Insignificant results of Statistical analysis further established that length had no significant effect on growth of studied species. </span></p>