Prolific growth of the feeding pellet designs (radial, concentric, concentric-radial, petaloid, asteroid and leaf-shaped at individual and mossy and mat at community levels) of the tiny bubbler crabs Dotilla on the intertidal beach of the Bay of Bengal coast has been attributed to burrow protection measure against their common predators (similar sized conspecific and heterospecific crabs) as a new neoichnological perception. With progressive feeding, the crabs increase the SI scores, a newly proposed security index, of their pellet designs through structural transformation, conjugation and merging of pellet designs, besides construction of pellet barricades. Four specialized substrate exploration techniques (sector of a circle, radially diverging, concentric and combined concentric-radial feeding modes) have been identified that ensure, as per prevailing conception, optimum food collection, economic substrate utilization and minimum chance of re-exploration of already explored area.The delicate pellet structures, despite having poor preservation potential, can be preserved in the sedimentary records in special circumstances, such as, ex situ preservation as pellet-filled burrows, ripple troughs and mud cracks and in situ preservation of the pellet mats through microbial stabilization following algal blooms and storm deposition. Geologically, the preserved Dotilla pellet spread and burrows ichnozone, besides confirming shallow-marine littoral settings, delineates the positions of ancient upper intertidal flat, land and sea, palaeo-hightide level and palaeo-shoreline configuration, i.e., data important for basin analysis. Stratigraphic disposition of the microbially stabilized pellet mats relative to different coastal facies helps interpret transgression and regression events of the palaeo-sea, besides episodic storm deposition and algal blooms.