fuckyeahbranchs:Flabellina affinis_02 by Guillem Mas on Flickr. For unicornpizzadough.

Flabellina affinis (nudibranch) see this previous post.

(Photo found here)

The striped anglerfish (Antennarius striatus) occurs in most marine tropical and temperate waters, from shallow waters down to over 200 m. They grow to 20cm. The coloration of the striped anglerfish is extremely variable, ranging from red, orange and yellow , through to green, brown or black. Some are heavily striped, while others have broken stripes or spots, or lack stripes entirely. Anglerfishes attract their prey with a “fishing lure.” The lure comprises a stalk - the illicium , Latin for “lure” or “inducement” and a bait - the esca. The “design” of the lure varies among genera. When a potential prey animal approaches, it stays motionless with the exception of the lure. If the prey moves in to investigate the moving lure, the anglerfish rapidly opens its large mouth and sucks in its prey. This is one of the fastest known feeding mechanism of any vertebrate animal. The whole process may happen so fast, it is impossible to see without the aid of high speed video. The large mouths and extendable stomachs of anglerfishes means they can eat very large prey. 

(Source)

(Photo found here)

The reef cuttlefish or broadclub cuttlefish (Sepia latimanus) is the second largest cuttlefish species after Sepia apama, growing to 50 cm in mantle length and 10 kg in weight. Like many cephalopods, the broadclub can be seen displaying a range of colors and textures. Commonly they are light brown or yellowish with white mottled markings. Males are sometimes dark brown, particularly during courtship and mating. They mate in shallow water between January and May. Their eggs hatch in 38 to 40 days. During the breeding season, males establish a territory, defending a coral head where females lay eggs after mating. Courtship is highly ritualized and involves striking visual displays. Males often guard females to ward off other males.

(Source)

(Photo by Leihla Scharlau) Lion’s mane jellyfish (see this previous post)

(Photo by Mark Laita)

The Richmond Wrasse (Halichoeres richmondi) occurs in shallow lagoon and channel reefs, up to a depth of at least 12 m, with rich soft-coral growth. They are usually in small loose groups. The wrasses are a family, Labridae, of marine fish, many of which are brightly colored. The family is large and diverse, with over 600 species.