why do sea turtles go back to where they were hatched to lay their eggs?
336597
The better question is how they do this (but of course, this is not known). As for why, it is a matter of survival. They clearly hatched and survived, so it stands to reason that the environment at that location is conducive to hatching and surviving. So, it is an evolutionary advantage to go back to the same spot to lay the next generation. By the way, that beach is called the "natal beach".
243238
Limbs are paddle-shaped to help the turtle move through the water; excretion of salts through lacrymal gland -conversion of saltwater to freshwater keeps the internal organs from failing and protects the sea turtle from dehydration; hard outer shell protects the turtle from predators and helps prevent dessication (drying out); hinge in the body that allows the turtle to take in more air and come up to breathe less frequently
42094
It's the year of the Sea Turtle.
595645
It is my understanding that rolling a bird egg equalizes the heat generated by the nesting mother, while for the reptile, the nest of decaying vegetation provides a pretty equal heating.\n\nThe bits before about the embryo attachment are true- and it would be interesting to researh the differing pathways these species took. Obviously, being able to heat your eggs on your own means you can and must protect them, which seems to logically flow into raising them at least a little. \n\nThis also means your young can be less developed at birth- unable to feed or care for themselves... it all sort of flows together, doesn't it?
66100
Back to their nests to boogey!
1104279
Large sea turtles, They don't remember all that much but they outlive us by hundreds of years so whatever they do remember its for a long time. So I guess that makes them the winners. lol
100
Eggs are laid by birds and cold-blooded reptiles. The largest eggs by far were laid by dinosaurs.
423174
Funny question. I think its because "baby got back"
619799
Crocodilians are very protective of their nests and babies.  A crocodile I know laid a clutch of eggs which were taken from her to be incubated (this ensures their survival better than if she were to raise them on her own).  She continued to be protective of her nest and would charge zoo visitors from behind the glass of her exhibit.
1059352
Why are Reptiles there....If Birds Evolved from them?
223973
They are less active in winter but they don't migrate. It was just looking for a place to rest for a minute that offered a little shelter from the weather.
447243
I know this may seem weird to other people, but the most fun I have happens every spring/summer.  Ever since I was a little girl, I have loved to go to ponds, lakes, any body of water, even puddles and look at all the wildlife in the water.  One small drop of water conatains so many different lifeforms. I love to look at and catch (momentarily, but I release them) tadpoles, minnows, crawdads/crayfish, lizards, some snakes but my all time favorite is to find baby turtles.  Hatchling turtles the size of quarters, which I bring home until they are about 4 inches, then release them into the wild.  I know others will say that I am not allowing nature to do its job, but those babies bring me so much happiness, I provide a good start for them, and believe me I know all there is to know about turtles.  How lucky am I that each spring/summer is to me, like Christmas morning to a child.  Now that my son is almost 8, I am trying to teach him how much we can learn from and love all animals....xxxxturtlegirl
1092591
I can tell you that when rehabilitating and rereleasing wild racoons, it's recommended to release them in the same place they were caught.  If they are released in a new location they often do not survive.  Even though they may have the capability to get home eventually, they will be attacked by the raccoons in the new area.
166054
There’s a fairly complicated evolutionary history to this trait. Trout started out initially as freshwater fish. As time went by their ancestors moved initially into brackish rivers, then into estuaries and finally into the oceans. But because they evolved in freshwater their eggs could still only survive in freshwater. So every year the trout ancestors had to move from the ocean back into the freshwater.\n\nBut as trout moved through the oceans they gradually discovered new rivers and streams in new countries, or streams that had just recently formed. Trout bred in those new streams, and some of them never moved back to the oceans. As a result today  there are lots of different types of trout. While most move back to the oceans after they hatch some live out their entire lives in freshwater. Others, like the steelhead, can do either, with some individuals returning to the oceans and some staying in the freshwater where they were born.\n\nBut because all trout ancestors evolved to swim from the ocean back up the freshwater streams most trout do the same today. Even those trout that never leave the freshwater feel that same urge to move higher upstream. But it should be noted that some trout species don’t swim upstream. Instead they swim towards clean water, which in many places can be downstream. But they still retain that same ancestral urge to migrate when it comes time to spawn.\n\nOddly enough many species of fish do exactly the opposite. These fish evolved in saltwater and although they spend most of  their lives in freshwater rivers and lakes they return to the ocean to spawn. The best known examples are the eels. The world contains lots of eels species that live in freshwater, but all return to the deep ocean where they first evolved in order to mate and lay eggs. Then the babies swim thousands of miles up out of the abyss and back up the same rivers their parents left.\n\nBiologically speaking trout swim upstream in repsonse to sex hormones that cause them to first seek highly oxygenated water and then to fight the current.\n____________________________________\n\nAddenda\n\nDogsmyjob said "Trout are fresh water fish only."\n\nI have no idea where you get yuour information, but you are completely and utterly incorrect. Most trout species remain anadromous, ie they return to the sea as adults. Why do you think there are  several species called sea trout?\nDon't believe me? Folow the links below.\n\nBut hey, at least you learned something today. \n\n"Anadromous bull trout rear in natal streams and migrate to marine environments to mature."\n\n"Rainbow trout are primarily a freshwater fish, although sea-run populations, often known as steelhead, exist in some areas. It is unclear whether this migration to sea water is genetic or simply opportunistic, but it appears that any population of rainbow trout is capable of migrating to or surviving in the sea if the need arises "\n\n"The shoals drop downstream during the night. A 'spate' will mitigate the change from fresh to salt water and particularly at these times the fish migrate to sea. Those fish not migrating return upstream for one more summer's growth."
526307
they probably wont even remember you. sea turtles do not nurse their young so it wouldnt even ever recognise its turtle mother anyway.
280932
There could be a lot of reasons why this occurs.  If it is a migratory bird, that particular pond could be one that is revisited each year, some birds return each year to the site in which they were born (site natality), that pond could have the best food, access to more mates, less chance of being predated upon, certain birds stay with their flock/family.  There are so many variables as to why birds select certain habitats...hope I added some insight!
955835
Water turtle  eggs usually hatch in 60-140 days (average 80-110 days) Eggs can be incubated by burying them in 1-2 inches of sand or dirt kept at 70-85 F.♥