In-depth logoFloor Anthoni

in-depth articles about our coasts and seas

by Dr J Floor Anthoni

The Seafriends web site aims to bring the hidden sea to the surface, for all to see. It also fosters in-depth understanding about how the sea works and how it suffers. All this can be studied systematically in the various sections on oceanography, issues (threats andconservation) and so on. But occasionally we like to write about things that do not fit in with the present framework. Often these are issues of the day, as they arise (like Cyclone Heta), and these end up in this in-depth section. See also images for interesting sea creatures.
Saving our seas. An introduction to Seafriends, the author and this series of articles. (2 pages)

Where have all the kingfish gone? In September 1999, fishermen reported low catches of kingfish. What
could it mean? What would kingfish require to live? How could we learn more from our observations? (2 pages)

Invasion of the parchment worm. A sudden explosion of a tube-dwelling worm, which may prove to be an alien species. (2 pages)

Bathers' rash: a stinging question. In some years, sea bathers get stung underneath their swimsuits. What causes it? (2 pages)

Know your jellyfish: some sting, some don't. There are only few jellyfish species world-wide. They are easily remembered. (3 pages)

Year of the sea hares. In the autumn of 2000, unusually many sea hares were found in many places. Why? (3 pages)

Perfect Storms.  Recent storms appear more threatening to coastal properties. Are New Zealanders prepared? Do we understand what is happening? (3 pages)

Cyclone Heta wreaks havoc on Niue Island: the why and how of this ferocious storm. (5 pages)

To feed or not to feed? Is fish feeding inside a marine reserve a bad practice? An in-depth discussion of the problem and its solutions. (7 pages)

Marine reserves: paradise won or lost? Understanding how marine reserves work and how they cannot save biodiversity or the sea in the presence of 'sick sea' marine degradation. (15 pages)

Shellfish collapses in New Zealand: shellfish live close to where people live, and they have a frightening story to tell. (8p)

The snapper-urchin-kelp myth: it is thought that marine reserves cause bigger snapper to eat more sea urchins, with the result that there is more kelp, but this is entirely untrue. (6p)

Octopus, smart and handy: meet the amazing octopus and other cephalopods (16p)

Sleeping fish: do fish sleep? Why? and how? and where? (12p)

Camouflage: the art of not being seen, seeming what one is not (17p)

Note! For printing these pages successfully, set your page settings (click File/Page setup) to top and bottom margins of 15mm (0.6") and left/right margins of  5 mm (0.2"). Study tips how to best use this web site. For corrections and suggestions, e-mail the author.
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Revised: 20010530,20030317,20030328,20090115,20090415,20090512,20090527