What are the most incredible animals in the world?

 Here are, in my opinion, the most incredible animals:

1- The lamprey

There are freshwater and saltwater lampreys.2- The pacu

This is a species of piranha found mainly in North and South America, with teeth that resemble those of a human. This fish uses its teeth to crack open fruit, especially nuts. Numerous attacks on the testicles have been reported; they mistake them for nuts. So, stay away from this fish, let's move on to the next one!

3- The Panda Ant

It looks like a plush toy! Except it's not an ant, but a wasp. Only the females don't have wings.

4- Umbonia Spinosa

Nothing special, except that it's gorgeous, and it has a pom-pom hat design.

5- Scotoplanes

A mix between a sea cucumber and chewing gum…but I think it suits him rather well.

6- Multicolored mantis shrimp

This shrimp is magnificent, and has exceptional eyesight.

7- Bathynomus

This thing can grow up to 50cm…nothing more to say, our nightmare.

What are some little known survival tactics by prey animals?

 Some ducks practice what is called unisphereic sleep.

When they form a line to sleep, the ducks at the end will often have one eye looking to the outside. The half of the brain that controls that eye will stay awake while the other half goes to sleep.

It’s a tactical formation: a line of ducks sleeping, while a duck on the outer end is keeping a lookout for predators while the remaining ducks sleep normally.

It’s remarkable because - ducks aren’t particularly smart creatures - this behavior has been ingrained and then reinforced through reproduction. (Half-Brained Ducks in a Row. Science Magazine. Mackenzie, Dana)

Sleeping with one eye open - is literally a thing - created by evolution.

But I’ll raise the stakes. Here’s something even better.

Some birds, that engage in super-long flights that last for weeks, even months engage in unisphereic sleep.

Scientists strapped a EEG detector to a frigate bird − those birds with strange, inflatable necks.

These birds are capable of flying for weeks on end. The EEG detector monitored their in-flight sleep patterns:

Noting that it would put one side of the brain to sleep as it navigated (just as dolphins do, to go up to breathe while sleeping), avoiding collisions with objects and other birds.

Some birds even have the ability to go completely to sleep, both brains asleep, while still retaining their GPS capabilities. (Evidence that birds sleep in mid-flight.Nature Communications volume 7. Neils Rattenborg.)

What animals give birth to the strangest offspring?

 This is called a Mermaid's Purse:

The cords you see attached to barnacles is actually the umbilical cord.

Mermaids purses are the eggs of select species of shark.

They come in many forms and are very unusual. The below is from a ghost shark:

Named after its ghostly appearance, lacking vision and living far too deep to be reached by sunlight.

Sharks typically drop their mermaid purses in pairs in secure areas on the ocean floor, in kelp or in rocky crevices to avoid notice of predators.

Catshark egg:

And cat shark embryo- later in development:

What are the rare photos of animals?

 1. Meet the Andean Condor.

2. Red-tailed black cockatoo.

3. The white-lipped python looks iridescent.

4. Baby squid, still in the egg

5. The goth looking Black-and-White Hawk-Eagle(Spizaetus melanoleucus).

6. Developing red-eyed tree frogs in Costa Rica

7. Male Kudu, Kruger, South Africa

8. A whole lot of penguins in South Georgia Island

9. Hoffmann's Two-toed Sloth Mama and baby

10. A Cecropia Moth I came across in Vermont (North America's largest native moth)

11. Nose fish

12. The Pallas’s Cat sneers in disgust at your baby animals.

Can you list some pictures of rarely seen animals?

 Alrighty. Let's roll.

1. The Dracula Parrot. Looks Evil, eats nothing but figs.

2. The princess didn't touch me.

The Black Rain Frog.

3. The male peacock Spider performing his mating display.

4. Keep Photographing and you're next!

A mean Gorilla.

5. I'm gonna blow my nose.

A Hooded Seal with an inflated nose to attract a female.

6. Guinean Cock of the Rock.

7. A Tarsier looking Dark as hell.

8. The Cassowary. Considered the most dangerous bird in the world.

9. Crab hanging off iguanas. The crabs eat the dead parasites on the iguana's skin.

10. Whachu lookin at?

The Sunda Flying Lemur.

11. The head of a Tapeworm under an electron Microscope. If we weren't terrified of tapeworms already.

12. Wolf Camaraderie!

13. Gotta catch em all

Piraputanga fish gathers some fruits.

14. The Masobe Gecko

15. An Albino Sulcata Tortoise

16. The Margay also called the Mini Jaguar.

17. The Takahe from New Zealand.

18. Short toed snake eagle, no prizes for guessing what she's eating.

19. Greater Sage Grouse.

Those aren't eggs. This is a male and those huge egg like things are sacs on his neck that inflate as part of his courtship display.

20. The American Luna Moth

21. Sunbathing

Jellyfish chilling.

22. Up in Flames

A Kookaburra looking on after its home was destroyed by bush fires

23. A vine snake looking happy as hell.

24. Larval Octopus with a transparent head

25. Weeee!

Bungee jumping Spider.

Edit: On popular demand, I've added some more;

Let's roll once more!

26. Hey, Blue eye!

Reindeer's eyes turn blue during the winter so that they can see better in low light.

27. The Vietnamese Mossy Frog

28. A secretary bird dancing along

29. An Amazon Milk Frog

30. Are we still on Earth?

This Rosy Maple Moth is straight out of an alien world.

31. Imma get down at 9, Pacific Avenue!

A school of Remoras hitching a ride inside the mouth of a whale shark!

32. This Usain gonna bolt!

The Jesus Lizard.

33. I'd live to tell my tail!

The Giant Indian Squirrel enjoying a meal!

34. Cosmoderus Femoralis, a type of Cricket found in Cameroon.

35. Oh! These lunges really improve my core!

The majestic Alpine Ibex.

What animals can eat sharks and are immune from their attacks?

 Not much is really ‘immune’ to shark attacks. At some point a shark can still bite everything and therefore damage it. Sharks have one of the highest recorded bite forces, being outpaced only by crocodiles. With up to 300 serrated teeth, a shark will bite something and start to thrash.

Not many ways to become invulnerable to this…

Of course, sharks will avoid various marine mammals. Marine mammals are massive - especially whales. The killer whale, or orca, is a whale (before I get “corrected” in the comments, yes orcas are dolphins but dolphins are a type of toothed whale, meaning orcas are dolphins and whales.) This badly represented animal is incredibly intelligent and strong, and will scare away sharks.

Sharks have been found to be significantly less likely to return to an area where the shark has seen an orca, and here's why:

Orcas are bigger than even great white sharks, and have killed and eaten great whites. Furthermore, orcas hunt in pods, which grants them even more protection and strength. But orcas don't always need numbers - only a pair of orcas killed at least 8 great white sharks!

How do the amazing killer whales do it? The orcas use their incredible intelligence. By flipping the shark over, the shark is forced to enter a state of tonic immobility, and cannot move as the orca kills it (usually by eating the high fat liver).

Here is a terrible excuse for a story explaining the relationship between orcas and great whites.

A family of orcas is out, going to a buffet, little kids all excited and parents hungry.

Gerald the great white shark is also visiting this buffet, seeking food.

The younger orcas spot a tasty seal, and immediately head for the sweet dish. Seals are one of the favourite foods of both the great white and the seal, but it's no secret the orca is a better hunter.

This seal has just escaped Gerald. Of course, this would never happen to an orca.

Think you can hide on the beach buddy boy?

Sooooooo that was my brother… he was kind of annoying though so I get it… but we're chill right?

Yeah get out

Heh you can't get me here…

Sorry what was that?

Oh hellll no

Anyways, back to our marine mealtime. As the young orcas head after a seal and launch it tens of feet into the air…

“Don't play with your food”

Mother orca is a little sidetracked though, as she has just caught sight of the main meal: Gerald the Great White Shark.

Half a second later…

Yep well storytime’s over… hey not all stories can have an entirely happy ending.

Other than orcas, sharks will avoid other whales too, such as the powerful sperm whale. In life pretty much any whale is too giant for even a great white to handle, but a whale carcass provides great blubber.

Bottlenose dolphins will also keep sharks away with their noses, using the snout to ram into the shark.

Other than whales, younger sharks will also avoid adult sea lions, which is yet another marine mammal. On the fishier side of things, sharks will only not eat highly poisonous or venomous animals.

Sea snake

In coastal waters, as stated in other answers, crocodiles can kill sharks, as they have powerful scale armour and an incredible bite force of up to 5,000 PSI. Saltwater crocodiles can eat younger bull sharks.

So in summary: nothing is really immune to sharks, but sharks will avoid marine mammals like whales, dolphins, and even larger seals. Saltwater crocodiles also pose a threat to sharks.

As for eating sharks, orca will eat shark liver (as it is high in fat), and saltwater crocodiles will also eat younger bull sharks.