As for a dredging ground, one may be found, I suppose, off every watering-place. The most fertile spots are in rough ground, in not less than five fathoms water. The deeper the water, the rarer and more interesting will the animals generally be: but a greater depth than fifteen fathoms is not easily reached on this side of Plymouth; and, on the whole, the beginner will find enough in seven or eight fathoms to stock an aquarium rivalling any of those in the “Tank-house” at the Zoological Gardens.
In general, the south coast of England, to the eastward of Portland, affords bad dredging ground. The friable cliffs, of comparatively recent formations, keep the sea shallow, and the bottom smooth and bare, by the vast deposits of sand and gravel. Yet round the Isle of Wight, especially at the back of the Needles, there ought to be fertile spots; and Weymouth, according to Mr. Gosse and other well-known naturalists, is a very garden of Nereus. Torbay, as may well be supposed, is an admirable dredging spot; perhaps its two best points are round the isolated Thatcher and Oare-rock, and from the mouth of Brixham harbour to Berry Head; along which last line, for perhaps three hundred years, the decks of all Brixham trawlers have been washed down ere running into harbour, and the sea-bottom thus stored with treasures scraped up from deeper water in every direction for miles and miles.
Hastings is, I fear, but a poor spot for dredging. Its friable cliffs and strong tides produce a changeable and barren sea-floor. Yet the immense quantities of Flustra thrown up after a storm indicate dredging ground at no great distance outside; its rocks, uninteresting as they are compared with our Devonians, have yielded to the industry and science of M. Tumanowicz a vast number of sea-weeds and sponges. Those three curious polypes, Valkeria cuscuta (Plate I. fig. 3), Notamia Bursaria, and Serialaria Lendigera, abound within tide-marks; and as the place is so much visited by Londoners, it may be worth while to give a few hints as to what might be done, by anyone whose curiosity has been excited by the salt-water tanks of the Zoological Gardens and the Crystal Palace.
[Picture: Plate 11: Syngnathus Lumbriciformis etc.]