The 10 Smallest Marine Animals in the World, Super Cute and Super Adorable
In life, small marine organisms are not widely known, although its species are abundant, like the world's smallest 10 marine animals, which are Paedocypris progenetica, Starburst pygmy octopus, Paddle-spurred sea star, Pea crab, Dwarf tiger goby, Spiny pufferfish urchin, Dwarf spotted wobbegong shark, Whip coral shrimp, Bean nut sea horse, Naked gill sea slug.
One, Paedocypris progenetica
The smallest fish, only 7.9mm (0.3 inches) long. Discovered in 2006 in the swamps of Indonesian islands, where the water is dark and acidic, with a pH almost 100 times that of rain. Researchers are discovering more and more species that can survive in these extreme conditions.
Two, Starburst pygmy octopus
This octopus weighs about 28 grams, with a total length of about 13cm (5 inches), with tentacles 8cm (3 inches) long. These small animals are commonly found in the warm, clean waters of the islands of the Cayman. However, they are very good at hiding, like to eat crustaceans, and it is interesting to observe them from a distance.
Three, Paddle-spurred sea star
Only about the size of a fingernail, first discovered in 2007, this animal is yellow to orange in color and lives with other small marine animals in the southern coast of Australia's shallow waters. It is more closely related to sea urchins, and its arms have paddle-like spines.
Four, Pea crab
Named for its small size and roundness, like a pea. This animal is the smallest crab in the world, with males not more than 0.8cm (0.3 inches) long when mature. Female pea crabs are usually pale pink, while male pea crabs are dark brown. They don't feed on soft-bodied animals themselves, but on various foods that contain soft-bodied animals.
Five, Dwarf tiger goby
A very small fish, less than 9mm (0.4 inches) long when mature. Initially considered to live in freshwater, but recently they have been discovered in other areas such as Singapore, Bali and Fiji. They mostly live in muddy and shady waters, no more than 2 meters (6.6 feet) deep, with plenty of aquatic plants for camouflage.
Six, Spiny pufferfish urchin
The smallest sea urchin, with a diameter of only 6mm (0.2 inches), is common in the western Pacific. It often lives under sand or small cracks in underwater rocks, and its color depends on the specific environment it is in. The sea urchin has a water vascular system, which allows it to contract muscles and create water pressure movements.
Seven, Dwarf spotted wobbegong shark
Only grows to 20cm (8 inches) when mature, these sharks are not well known because they were only discovered in 1964 and rarely found. These sharks are dark brown, with black spots on their bodies. Despite their small size, dwarf spotted wobbegong sharks are carnivorous, feeding mainly on shrimp and other small crustaceans.
Eight, Whip coral shrimp
Only 1.5cm (0.6 inches) long, usually red and white, with a unique spiny appearance on its body. It disguises itself at depths of 210 meters (690 feet) to 10 meters (33 feet), feeding on algae or parasites.
Nine, Bean nut sea horse
For scientists, this is a relatively new discovery. Researchers discovered these tiny sea horses while observing coral reefs in the West Pacific and have been studying them since then. So far, researchers have learned that the average length of this species is 1-2cm (0.4 to 0.8 inches), and more and more research is being done on its behavior and natural habitat. It is known that this species is monogamous within its short life cycle.
Ten, Naked gill sea slug
A soft-bodied invertebrate without a shell, it can be as small as 0.64cm (0.25 inches). Its size, shape and color may vary depending on the specific environment it is in, and these tiny animals are hermaphroditic, feeding on various organisms.
