Dotilla myctiroides

Dotilla myctiroides is a species of sand bubbler crab found on tropical shores and mud-flats of India, Thailand, Malaysia, Indonesia, Singapore and Sri Lanka.

[2] They breed throughout the year but activity peaks during the monsoons.

In building the igloo, the crab excavates sand and forms it into spherical pellets.

These pellets are used to form a circular wall and roof in the burrow.

The resulting structure holds a small amount of air in addition to the crab itself.

"Sun-burst" of sand beads prepared by the soldier crab