They are moving slowly but surely towards the right place where those eggs should be laid.  What guides them?  Why do they go this way and not that in the vast ocean?  We do not really know what guides them; so we say that they obey a wonderful, unfailing guide—­“instinct.”

Of course you have seen and tasted the “hard” roe of a Herring; but I do not suppose you have ever troubled to count all those little round eggs.  Each roe contains some thirty thousand of them!  What a huge number of young ones for one Herring!  Still, this is not a large family, as fish families go.  The Cod lays about nine million eggs!

At last the Herrings reach the breeding grounds that they sought, and the eggs are laid.  The eggs of most sea-fish just drift on the surface of the ocean, at the mercy of their enemies, and washing here and there as the current sends them.  The Herring’s eggs sink to the bottom and, being rather sticky, adhere wherever they fall.

There they lie in masses, on the bed of the sea, and then guests of all kinds hasten to enjoy such a rare feast of eggs, laid ready for them.  One of the first guests is the Haddock.  He comes in his thousands, greedy for his part of the good food; but, knowing this, the fishermen also hasten to the spot, and the Haddock pays dearly for his love of Herring eggs.

Only a few out of each thousand eggs will escape their enemies, and the baby Herrings, which hatch in about a fortnight, run many dangers; thus, in the end, the huge family of Mrs. Herring is reduced to a small one.  Even so, there are countless numbers of the tiny fish.  They soon grow shining scales, like those of their parents, and move towards the coast.

It is a pretty sight, these little silvery Herrings playing in the shallow water.  Millions of them dart about and flash in the sunshine, during the summer months, round our coasts.  Sea-birds and other enemies hover round, to feast on the tiny fish.  Great numbers of these baby Herrings are caught and sold as “Whitebait.”

The older Herrings, having laid their eggs, leave the shallows, and make their way into deep water.  They are no longer nice to eat, and the Herring harvest is over until the following season.

In our talk on flat-fish we shall notice how they are caught, near the bed of the sea, in the trawl-net.  Now this net is of no use for the capture of Herrings.  They swim in the open water, near the surface, and so another kind of trap, the drift-net, is used.

Hundreds of vessels sail from our fishing ports when King Herring is about.  Each vessel carries a number of drift-nets.  These nets are to be let down like a hanging wall, in the path of the shoal, at night.  Corks or bladders are fastened to the upper edge of the nets.  Of course they are all mended and made ready before the vessels reach the fishing grounds.  It is not easy to know where to shoot the nets; all the skill and knowledge of the fisherman are needed to locate the shoals, and, without this knowledge, he would come home with an empty vessel.  Even as it is, he sometimes catches no more fish than would fill his hat.