Encyclopedia

  The Tambja kava is a colorful nudibranch characterized by its vibrant lime green body adorned with light shades of orange markings. Its cerata, gills, and rhinophores are highlighted with bright purple tips, creating a vivid contrast against the lime background. This species was first described in 2014 and is known from various locations in the Indo-Pacific region. Size: Up to 20 mm Range: Indo-Pacific; including the Marshall Islands and Romblon, Philippines Habitat / Depth: Lagoon reefs and pinnacles; typically found at depths of 5–15 meters Diet: Feeds on bryozoans

Tambja verconis   The Verco’s Nudibranch is a showstopper on the reef, with a velvety deep yellow-green body boldly striped with electric-blue lines. Its rhinophores and gill structures glow with the same neon blue, standing out like beacons against the golden body. The contrast of shimmering cobalt and rich yellow makes it one of the most dazzling nudibranchs to encounter. Size: Up to 100 mm Range: Indo-Pacific; commonly reported around southern Australia, Indonesia, and the Philippines Habitat / Depth: Found on rocky reefs, sponges, and coral rubble; usually shallow to mid-depths (5–30 m) Diet: Specializes on bryozoans and certain sessile...

Pseudobiceros cf. dimidiatus   The Tiger Flatworm is a striking marine flatworm known for its bold and contrasting coloration. Its elongated, oval body features a velvety black dorsal surface with a vibrant orange margin. Prominent yellow-green longitudinal stripes often run along the midline, separated by a narrow black median line, creating a tiger-like pattern. This species exhibits considerable color and pattern variation across its range, making each individual unique. Size: Up to 80 mm Range: Tropical Indo-Pacific; including Hawaii, Indonesia, the Philippines, Micronesia, the Maldives, and Australia Habitat / Depth: Coral reefs and reef slopes; typically found at depths of...

A dramatic critter of deep midnight blue–black with a bold sky-blue inner border and a thin yellow outer edge — this flatworm looks like a hall-of-mirrors frame in motion. As it glides across coral rubble, its tricolor margin shimmers, turning each movement into a living piece of neon art.   Size: Up to 30mm Range: Indo-Pacific—recorded in Indonesia, the Philippines, Micronesia, the Maldives, and Australia Habitat / Depth: Often seen under stones or on reef rubble in shallow waters; exact depths not frequently reported Diet: Presumed carnivorous like many Pseudoceros—feeds on sessile invertebrates (e.g., colonial ascidians)

Pseudoceros ferrugineus   A mesmerising ribbon of fuchsia pink, speckled with fine white dots, this flatworm radiates boldness. Its broad, oval body is edged by vivid red and orange bands that ripple in rich concentric folds. As it glides across corals and reef surfaces, those fiery margins undulate like living neon lace, making it look like a living jewel against the reef.  • Size: Up to 48 mm• Range: Tropical Indo-Pacific; from Indonesia and the Philippines to the Great Barrier Reef and Hawaii• Habitat / Depth: Coral and rocky substrates, external reef slopes and reef tops, down to ~15 m•...

Chromodoris annae   This nudibranch wears a velvety blue mantle like a soft satin cloak, dotted with scattered black specks that give it a playful, starry effect. Its edges are framed with a bold, glowing orange trim, and its feathery gills and antenna-like rhinophores shine in matching orange, adding pops of brightness with every graceful glide. Size: Up to 50 mm Range: Indo-Pacific; from Malaysia and Indonesia to the Philippines and the Marshall Islands Habitat / Depth: Coral reefs and rocky outcrops, found at depths of 15–30 m Diet: Feeds on sponges, particularly those in the Petrosaspongia group.