15 Incredible Creatures from Russia’s White Sea Shot in Macro

Neresi Virens PharynxPhoto: Alexander Semenov

Alexander Semenov takes us into the secret and mysterious world under Russia’s White Sea. Alexander is a biologist at the White Sea Biological Station, where he works as chief of the dive team and in the lab. He loves taking macro shots of the almost invisible tiny creatures in the sea that most of us never get to see.

15. Skeleton Shrimp (“come closer my dear”)
Come closer  Caprella linaeris wnat to eat youPhoto: Alexander Semenov

This little horror may be a very common shrimp in the White Sea but he sure doesn’t look friendly! It is actually a skeleton shrimp and doesn’t have a shell. The best description of what it is like we found on Wiki: “They resemble an inchworm while “walking”, a stick while sitting still and a praying mantis while catching prey.” They are so thin they blend in perfectly with swaying sea grasses.

14. Brachiopod
Brachiopoda and chiton  Hemithyris psittacea (Rhynchonella psittacea)Photo: Alexander Semenov

This beautiful brachiopod is a living fossil. It hasn’t changed one bit in 4 million years, even though many of its cousins have become extinct. Scientists are not sure why, but most fish and crustaceans don’t seem to like the taste of brachiopods and leave them alone. In this amazing photo you can see the “lophophore” inside the shell which filters food for the brachiopod.

13. Nereis Pellagica – Sandworm
Coil  Nereis pellagicaPhoto: Alexander Semenov

Nerei Pellagica is also known as the sandworm and is huge. It can grow up to 40 cm long and be as big around as your thumb. The little growths on its sides are called parapodia and are used rather like gills, for breathing, and to move with – like little feet.

12. Nereis Virens
Dragon  Nereis virensPhoto: Alexander Semenov

This monstrous face is nasty! It isn’t above trying to give you a bite with those two teeth either if it can’t run away. Behind its mouth is an enormous pharynx, which connects the mouth to the esophagus and which can be a 1/4 of the length of his body with two sharp jaws. When it catches prey it can push it out of his mouth at blazing speed, and as the photographer says, “It’s not a good show before sleeping or eating,” as you can see in the very first image.

11. Sea Slug
Looking for food  Seaslug Coryphella verrucosaPhoto: Alexander Semenov

This is one of the prettiest sea slugs in the White Sea. The color of its papillas – the colored parts – depends on what it eats. It is one of the most common creatures in the sea.

10. White Sea Amphipoda
White sea amphipoda, head close-upPhoto: Alexander Semenov

This is the head of an unidentified amphipoda. Amphipoda are shell-less crustaceans, and in the White Sea there are 230 species, most of which are only encountered once or twice. Their name means “different footed” because unlike an isopod (see here) their legs are not all the same.

9. Dendrotus Frondosus
Translucent seaslug Dendronotus frondosus with green digestive systemPhoto: Alexander Semenov

This translucent sea slug has a green digestive system which we can readily see. It is extremely rare – and the photographer has only seen them twice – but its golden brown cousin is common (you see one below).

An Embryo  Dendronotus frondosusPhoto: Alexander Semenov

Sea slugs pull in their papilla when disturbed or scared because predators like to feed on them.

8. Tubularia Flower
Tubularia flower  Single zooid of Tubularia larynx colonyPhoto: Alexander Semenov

This looks like a lovely flower but is all animal! It is carnivorous and has poisonous cells to defend itself and to catch prey with. The flowers are tiny, only 3-4 mm in size.

7. Flourescent Scales of Lepidonotus squamatus
Fluorescence of polynoid worm Lepidonotus squamatusPhoto: Alexander Semenov

The Lepidonotus squamatus have 12 scales, and Alexander Semenov has done an incredible job of catching the fluorescence in them, shooting the photo under UV light with an orange filter. The males are pale when sexually mature because of the sperm within them while the females are green or gray.

6. Sunstar Skin
Crossaster skin  Close up shot of Crossaster papposus surfacePhoto: Alexander Semenov

This is the skin of the common sunstar, one of the largest and fastest sea stars in the world. It will eat anything and even swallow other sunstars whole!

5. Sea AngelMutaliskPhoto: Alexander Semenov

The sea angel (who was part of our 12 Plankton of Christmas story) is starting to hunt for its prey, the sea butterfly. The angels are actually baby sea slugs and have closely matched their metabolism to their prey.

4. Sea Butterfly
Sea ButterflyPhoto: Alexander Semenov

The prey of sea angels, this diminutive animal has black wings that are actually lobes of its “feet”, which it beats to move through the water. Sea butterflies are about the size of a lentil.

3. Metridium
Metridium!Photo: Alexander Semenov

This isn’t a leftover visitor to Woodstock but a sea anemone that has lots of long tentacles. The Metridium always has a central stalk like this one but they are not all as beautiful or bizarre. This one with purple tentacles is rare; normally instead of purple they are orange or yellow.

2. LimapontiaLimapontiaPhoto: Alexander Semenov

These incredible little animals look like elephant embryos or little bears but are adult Limapontia. Very little is known about them; they are generally brown in color but some are lighter as we see here.

1. iSlug
iSlug  Coryphella verrucosaPhoto: Alexander Semenov

This sexy little creature has been nicknamed iSlug by the photographer and we can see why. It is another one of the common sea slugs but has brilliant red coloring from its food.

Alexander Semenov hopes to raise awareness about marine biology and invertebrate zoology around the world. As we can see from just this small collection, there are a lot of wonderful and unique animals that most of us have never seen before.

I want to give a special thank you to Alexander for allowing me the use of his images and being so very helpful with providing information about the animals shown here.

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