Geography, Ecology, etc.

About Hydra / Climate, Seasons, Geography

Itself basically a 52 km2 rock, the vast part of which is uninhabited, Hydra is characterized by rocky mountains and hillsides, pine-forested valleys, and 56 km of craggy coastline.

_Water boat

Evgenia importing water to Hydra

The highest peak is Mount Eros, which occupies the central zone and raises to an altitude of 500m. The Zogeri range of mountain lies to the south of Hydra and the Ombari range to the north. Hydra’s population of nearly 2,000 is predominately concentrated along about 3 km of coastline on the northern side of the island in Hydra Town and the neighboring villages of Kamini, Vlychos, and Mandraki.



In ancient times Hydra was covered with pines and had plenty of water (the source of the island’s name). Today, the island is mostly dry and imports the bulk of its water by boat from the Greek mainland. Hydra still has a working well in the area of Kala Pigadia (meaning “good wells”), and a new spring water source discovered in the mountains is being used to supplement the water supply. A desalinization plant in Mandraki, scheduled for completion in 2013, should also reduce the island’s dependence on external water sources. While the water on Hydra is safe to drink, the mineral content is quite high, and many local people drink and cook either with winter rainwater stored in  household cisternas or with bottled water.



By the time temperatures start soaring in mid-summer, most ground-level vegetation (grasses, flowering plants, scrub brush) has dried out and turned brown, but colorful spring and early summer bring a wealth of wildflowers, including white and yellow daisies, cyclamen, irises, thistles, and red poppies.  Purple, orange, and even yellow bougainvillea, hibiscus, plumbago, and geraniums bloom and persist throughout the summer. Century plants, prickly pears, Hottentot figs, and cacti are ubiquitous. In addition to the pine trees in the hills, cypress, olive, eucalyptus, fig, lemon, and even orange trees abound.

Hydra Summer 201304Birds species include partridges, quails, swallows, owls, and many migratory birds; small, harmless bats are common in the evenings. Animal species include rabbits and foxes (generally up in the mountains), as well as equines (horses, mules, donkeys), feral and domestic cats, and domestic dogs, as well as livestock such as sheep, goats, chickens, and roosters. Tortoises are common. Semipoisonous (nonlethal) snakes exist in more rural areas and are rarely seen in town.

Gar fish

Gar fish

Sadly, dynamite and small-net fishing decimated the fish population in the waters around Hydra. Due to EU regulations banning dynamiting and specifying minimum net sizes, the marine ecology is regenerating. Marine life consists a variety of smaller fish, sometimes quite colorful, swimming singly or in schools (e.g., silvery-blue, needlelike gar fish, small tuna, barbounia, mullet, red snapper, small barracuda, dolphins, the odd swordfish), the rare sea turtle), as well as sea urchins, octopuses, star fish, squid, sea turtles (very rare), eels, and sea centipedes (which feed on the sea floor but should not be approached). In some summers jellyfish float through the local waters for a few days, but for the most part the seas around Hydra are free of them.

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