Vallisneria spiralis is an example of hydrophily. Female flowers reach the water's surface temporarily to ensure pollination.
Hydrophily is a fairly uncommon form of pollination whereby pollen is distributed by the flow of waters, particularly in rivers and streams. Hydrophilous species fall into two categories:
(i) Those that distribute their pollen to the surface of water. e.g. Vallisneria's male flower or pollen grain are released on the surface of water, which are passively carried away by water currents; some of them eventually reach the female flower
(ii) Those that distribute it beneath the surface. e.g. seagrasses in which female flower remain submerged in water and pollen grains are released inside the water.
Surface hydrophily has been observed in several species of Potamogeton as well as some marine species. Species exhibiting true submerged hydrophily include...
Hydrophis is a genus of sea snakes, venomous snakes in the subfamily Hydrophiinae of the family Elapidae. Species in the genus Hydrophis are typically...
Hydrophis belcheri, commonly known as the faint-banded sea snake or Belcher's sea snake, is an extremely venomous species of elapid sea snake. It has...
Hydrophis peronii, commonly known as the horned sea snake, Peron's sea snake, and the spiny-headed seasnake, is a species of venomous snake in the subfamily...
Hydrophis schistosus, commonly known as the beaked sea snake, hook-nosed sea snake, common sea snake, or the Valakadeyan sea snake, is a highly venomous...
Hydrophis semperi, commonly known as the Lake Taal snake, Garman's sea snake, the Philippine freshwater sea snake, and the Luzon sea snake, is a rare...
Hydrophis lapemoides is a species of snake in the family Elapidae known commonly as the Persian Gulf sea snake. This sea snake is native to the Indian...
Hydrophis spiralis, commonly known as the yellow sea snake, is a species of venomous sea snake in the family Elapidae. This is perhaps the longest species...
The anomalous sea snake (Hydrophis anomalus) is a species of sea snake. Its distribution includes the South Chinese Sea (Malaysia, Gulf of Thailand),...
Hydrophis ornatus, commonly known as the ornate reef sea snake, is a species of venomous sea snake in the family Elapidae. This snake-species is found...
Hydrophis cyanocinctus, commonly called the annulated sea snake or the blue-banded sea snake, is a species of venomous sea snake in the family Elapidae...
Hydrophis laboutei, also known as Laboute's sea snake, is a species of venomous sea snake in the family Elapidae that is native to New Caledonia. The...
Hydrophis cantoris, also known commonly as Cantor's narrow-headed sea snake and Cantor's small-headed sea snake, is a species of venomous sea snake in...
related to Hydrophis schistosus. Hydrophis zweifeli are commonly known as the Sepik beaked sea snake or Zweifel's beaked sea snake. Hydrophis zweifeli is...
Hydrophis curtus, also known as Shaw's Sea Snake, short sea snake, but often includes Hydrophis hardwickii is a species of sea snake. Like most Hydrophiinae...
The elegant sea snake (Hydrophis elegans) is a highly venomous sea snake in the family Elapidae. They are found off the coast of Western Australia, Northern...
Hydrophis fasciatus, commonly known as the striped sea snake, is a species of venomous sea snake in the family Elapidae (Hydrophiinae). Hydrophis fasciatus...
Hydrophis viperinus, commonly known as the viperine sea snake, is a species of venomous sea snake in the family Elapidae (Hydrophiinae). Scales hexagonal...
Hydrophis brookii is a species of venomous sea snake in the subfamily Hydrophiinae of the family Elapidae. The species is native to bodies of water in...
Hydrophis klossi, commonly known as Kloss's sea snake, is a species of sea snake in the family Elapidae. Like all other sea snakes, it is venomous. The...
Hydrophis nigrocinctus, or the black-banded sea snake, is a species of marine venomous snakes in the family Elapidae (Hydrophiinae-sea snake). There have...
Hydrophis sibauensis, also known as the Kalimantan sea snake, is a species of venomous sea snake in the family Elapidae that is native to Indonesia, and...
Hydrophis melanocephalus, commonly known as the slender-necked sea snake, is a species of venomous sea snake in the family Elapidae. South China Sea,...
grow to between 120 and 150 cm (4 and 5 ft) in length, with the largest, Hydrophis spiralis, reaching a maximum of 3 m (10 ft). Their eyes are relatively...
Hydrophis stricticollis, commonly called the collared sea snake, is a species of venomous sea snake in the family Elapidae. Scales on thickest part of...
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