Overview

Chhera Island, locally known as Chhera Dwip and sometimes called Cheradia or Cheridia Island, is a small tidal islet that lies adjacent to St. Martin's Island in southern Bangladesh. It is connected to St. Martin's at low tide but becomes separated by seawater when the tide rises. The feature is notable for its exposed coral outcrops and largely uninhabited shoreline; there are no permanent settlements, and the place is visited mainly by day-trip tourists and seasonal fishermen.

Geography and access

At low tide the sand and rock between the two islands are walkable, and the crossing can take roughly two and a half hours on foot from St. Martin's, depending on conditions and route. Most visitors choose to travel by motorboat from St. Martin's or the nearby mainland harbors, which reduces travel time and avoids the risk of being cut off by the incoming tide. The islet consists of coral platforms, sand, and a small vegetated patch; wave action and tides continually reshape its shoreline.

Natural features

Coral formations and reef fragments are widespread around Chhera Island, and marine life associated with coral habitats is a major attraction. The surface is interspersed with sandy stretches and rocky flats; there is a small green area where salt-tolerant shrubs grow. Visitors should be cautious around reefs, both to protect fragile corals and to avoid injury. For more on the local coral ecology see coral-related resources.

Uses and visitor experience

Chhera Island is primarily a destination for short excursions: snorkeling and shallow-water observation, photography, beachcombing, and picnics. The lack of infrastructure means trips are typically day visits from St. Martin's or coastal towns. Seasonal fishing and small-scale harvesting of marine resources take place in nearby waters. The islet offers an open, low-density visitor experience compared with the inhabited parts of St. Martin's.

Conservation, safety, and practical advice

Because the island's character depends on its coral and shoreline, conservation concerns include coral damage from trampling, littering, and illegal collection. Visitors are advised to follow low-impact practices: avoid stepping on live corals, carry out waste, and use boats responsibly. Check tide schedules before attempting a crossing on foot and hire a local guide or boat to reduce risk of being stranded by rising water. Practical tips:

  • Plan crossings at low tide and allow margin for delays.
  • Respect coral and marine life—do not remove or break reef pieces.
  • Use local boat operators familiar with changing currents and conditions.
  • Carry water, sun protection, and rubbish bags; no facilities are available.

Chhera Island remains a compact, changeable landscape shaped by tides and reefs. Its proximity to St. Martin's Island makes it an accessible example of the region's coastal and marine environment, and it illustrates the balance between tourism interest and the need for careful stewardship of fragile island ecosystems. For travel planning and local guidance consult regional resources or operators linked from local guides and authorities Chhera Dwip, boat services, and broader destination pages Bangladesh.