Arachnoides placenta (Linnaeus 1758)

Description: English: Cake sand dollars (Arachnoides placenta). Date: 22 March 2007, 17:57. Source: Cake sand dollars (Arachnoides placenta). Author: Ria Tan. Camera location1° 15′ 35.31″ N, 103° 45′ 17.88″ E View all coordinates using: OpenStreetMap 1.259807; 103.754968.

Description: English: Star shaped bits are seen in the pecked sand dollars (Arachnoides placenta. Date: 28 March 2010, 15:21. Source: Cake sand dollar (Arachnoides placenta) overturned and pecked. Author: Ria Tan. Camera location1° 24′ 37.13″ N, 103° 59′ 38.43″ E View all coordinates using: OpenStreetMap 1.410313; 103.994007.

Description: English: Arachnoides placenta. Specimen at Natural History Museum, Gothenburg. Date: 31 August 2019, 11:26:44. Source: Own work. Author: Netha Hussain. Camera location57° 41′ 24″ N, 11° 56′ 57″ E View all coordinates using: OpenStreetMap 57.690000; 11.949167.