Koh Nu and Koh Maeo (Mouse Island and Cat Island) are small limestone island groups located at the mouth of Songkhla Bay in the Gulf of Thailand, only a few kilometers off Samila Beach. The islands were formed over a long geological period through continuous erosion by waves and seawater, gradually separating from the mainland and becoming isolated offshore islets.

Koh Nu is smaller and appears as a low rocky outcrop close to sea level. Koh Maeo is slightly larger and has a steeper, more prominent shape. Neither island has permanent residents. Their surfaces consist of limestone with cavities and natural grooves formed by erosion. The surrounding waters support a coastal marine ecosystem, including small fish, shellfish, and underwater rock formations.

The most well-known local legend tells of a mouse, a cat, and a dog who traveled with a Chinese merchant carrying a magical crystal. The animals attempted to steal the crystal and escape by sea.

• The mouse and cat tried to steal the crystal and fled into the sea

• The dog chased after them, depending on the version of the story

• During the escape, they became exhausted and drowned
• The mouse transformed into Koh Nu

• The cat transformed into Koh Maeo

• The dog became Khao Tang Kuan (Dog Mountain) on the mainland

This legend reflects traditional beliefs about greed, conflict, and the supernatural formation of natural landscapes, deeply rooted in Songkhla’s cultural identity.

The islands are not only geographical features but also an important symbol of Songkhla. They are widely used in:

• Tourism logos and provincial symbolism
• Coastal sculptures and public art installations
• Local folklore taught in schools and museums
• A recognizable image associated with visitors to Songkhla

The surrounding area is a limestone coastal ecosystem with relatively rich biodiversity, including small reef fish, shallow-water marine life, seabirds resting on rocky surfaces, salt-tolerant plants, and seaweed communities. While not a major diving site, it is considered an important coastal conservation area in Songkhla Bay.

Today, Koh Nu and Koh Maeo serve primarily as sightseeing landmarks rather than landing destinations. Visitors typically:

• Take photographs from Samila Beach

• Join boat tours around the islands

• Listen to local guides explaining the legend

• Watch sunsets with the islands as a backdrop

Access to the islands themselves is limited at times due to safety concerns and environmental conservation efforts.

Admission Fee:

• No entrance fee (boat rental costs approximately 500–1,000 THB (depending on boat size and negotiation).

Opening Hours:

• Viewable from the shore 24 hours a day / Boat tours recommended between 08:00–17:00.