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| crabs text index | photo index |
| Phylum Arthropoda > Subphylum Crustacea > Class Malacostraca > Order Decapoda > Brachyurans > Family Portunidae |
| Blue-spined
swimming crab Thalamita sp.* Family Portunidae updated Aug 10 Where seen? This colourful swimming crab with bright blue spines is commonly seen on many of our shores, especially those with coral rubble and reefs. It is particularly active at night. Features: Body width 5-7cm. Body rectangular, eyes wide apart. With 4 spines on the sides. The spines are usually bright blue with dark tips. The pincers have similar spines as well as little bumps and ridges. Their bodies may be yellow, orange or grey. Their eyes are wide apart and they have 4 spines on the sides of their bodies. |
 Sentosa, Aug 04 |
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Blue-spined swimming crabs on Singapore shores
 A mating pair. Kusu Island, Jul 04 |
 About to mate? Terumbu Pempang Laut, Aug 10 |
 Sisters Island, Aug 07 |
 Pulau Senang, Aug 10 |
more photos of blue-spined swimming crabs on Singapore shores
northern shores
southern shores part 1 | part 2 | part 3 | part 4
*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.
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