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Phylym Platyhelmenthes or flat worms.
Red tailed catfish
fire salamander tiger yellow black nature wildlife
Lined Chiton; Tonicella lineata; color image; Alaska; invertebrate; invertebrate zoology; marine; marine life; intertidal zone; intertidal; no people; ocean life; photograph; photography; sea life; tide pool; tidepool; underwater; wildlife
Selective focus of The zig-zag eel (Mastacembelus armatus), also known as the tire-track eel, tire-track spiny eel or marbled spiny eel.
Aquatic (fresh water) nematode living in pond water among cyanobacteria. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Atlantic Cod -  Gadus morhua
Frog
Male of Great Crested Newt (Triturus cristatus). It's skin color and crest is typical for breeding time.
Colorful Coral Reef Teeming with Exotic Fish. Lively and colorful coral reef in a vibrant underwater world. Diverse array of tropical fish swimming freely in their aquatic environment, creating a mesmerizing scene for nature and animal enthusiasts alike.
Close up of Spotted gar or Lepisosteus oculatus fish photographed in an aquarium
The Caspian whipsnake (Dolichophis caspius, sometimes also Coluber caspius) also known as the large whipsnake (among various other species in genus Dolichophis/Coluber), is a common species of whipsnake found in the Balkans and parts of Eastern Europe.\nDescription:\nThe Caspian whipsnake is perhaps the largest species of snake in Europe. It typically grows to around 140–160 cm in length, though a few may exceed a length of 200 cm. The record sized specimen was approximately 250 cm. Body mass can be commonly from 120 to 673 g. This species is not venomous and is mostly active during the day. The head is joined to the body by a thick neck. Its pupils are round. Nineteen rows of smooth scales can be found at the middle body, though rarely there may be seventeen. Dorsal scales each have two apical pits at the posterior edge. The center of the scale is lighter in colour than the edges. The dorsal side is grey-brown and features markings which are distinctive in juveniles and young snakes but fade with age. The ventral side is light yellow or white (source Wikipedia).\n\nThis Picture is made during a Vacation in Bulgaria in May 2018.
High fin whiptail catfish Rineloricaria lanceolata freshwater aquarium fish
Banded Sea Snake Laticauda colubrina on a outer reef swimming to surface, looking for fresh water. Sea Snakes need to drink fresh water and regularly come onto land for that purpose. The Banded Sea Snake Laticauda colubrina occurs in tropical Indo-Pacific. Males maximum length 88 cm, females 142 cm. The Banded Sea Snake is often seen in large numbers in the company of hunting parties of giant trevally (Caranx ignobilis) and goatfish. Their cooperative hunting technique is similar to that of the moray eel, with the Snakes flushing out prey from narrow crevices and holes. \nThis specimen was encountered in the Triton Bay, Kaimana Regency, West Papua Province, Indonesia, 3°55'0.7321 S 134°6'7.7298 E.
Atlantic Halibut
Gabriela's Tambja, Dorid Nudibranch
An Eastern Hellbender foraging for crayfish on the bottom of the creek.
a frog searches for food at night in the Ecuado0rian Amazon Rainforest
amazing inhabitants of the microworld under a microscope
Haliotis kamtschatkana, northern abalone or pinto abalone, is a species of large sea snail, a marine gastropod mollusc in the family Haliotidae, the abalones. It has been listed as \
Dogfish / Catshark (Cat Shark) taken in various location in the sea lochs and off the coast of Scotland.
Electric eel
Indian spectacled cobra showing spectacle marks on back of the hood, Naja naja, Satara, Maharashtra,  India
Giant moray eel, underwater Gymnothorax miliaris
Ringed Pipefish Dunckerocampus dactyliophorus (Doryrhamphus dactyliophorus no longer accepted) occurs in the tropical Indo-Pacific from the Red Sea and East Africa to Samoa, north to Japan, south to Australia in a depth range from 5-59m, max. length 19cm. The ovoviviparous species inhabits tide pools, lagoons, and outer reef slopes. Ringed Pipefishes are found in caves and crevices. The species feeds on small invertebrates. The male carries the eggs in a brood pouch which is found under the tail. \nBanda Neira Island, Indonesia, \n4°31'20.574 S 129°53'55.134 E, at 2m depth (unusually shallow!) by night
Blackspotted Puffer fish (Arothron nigropunctatus) or Dog-faced Puffer
Japanese river monster - Japanese Giant Salamander of Gifu, Japan
The Arctic grayling (Thymallus arcticus) is a species of freshwater fish in the salmon family Salmonidae. T. arcticus is widespread throughout the Arctic and Pacific drainages in Canada, Alaska, and Siberia, as well as the upper Missouri River drainage in Montana.  Wyoming.
Spotted Gar aka Lepisosteus Oculatus in aquarium
Boa constrictor snake seen close-up rearing his head
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