Diamond Squid (Thysanoteuthis rhombus)
Also known as the diamondback squid, the diamond squid is a large species of thysanoteuthid squid that occurs in tropical and subtropical waters worldwide. Like other squids diamond squids are hunters and will hunt near the surface at night. They will ‘retreat’ to midwaters during the day. Diamond squid have unusually short arms and large fins which earn them their common name.
Diamond squid are noted for their unique “pyrosome-like” egg masses that float near the ocean’s surface.
Image: John Arnold