Water Tektite

Water Tektites, also known as Water Bugs, are a species of giant green that sometimes resembles Tektites.

The Legend of Zelda: A Link to the Past
In The Legend of Zelda: A Link to the Past, Water Tektites always face the side and have a pair of red eyes. They are encountered only in the Swamp Palace, where they dart around in diagonal movements towards Link. Most pools with them have a total of three.

The Legend of Zelda: Link's Awakening
In The Legend of Zelda: Link's Awakening, Water Tektites always face the screen and have only a single eye, furthering the resemblance to Tektites. They appear in Angler's Tunnel and Catfish's Maw and still dart around diagonally, but now do so oblivious to Link rather than chasing him. A miniboss combining their traits with those of the Helmasaur also appears, called Hydrosoar.

In the Nintendo Switch remake, Water Tektites now use their design from the Nintendo 3DS games, but with added pads on the feet.

The Legend of Zelda: Oracle of Seasons/Ages
In The Legend of Zelda: Oracle of Seasons and The Legend of Zelda: Oracle of Ages, Water Tektites appear as they do in Link's Awakening, appearing in Mermaid's Cave in the former and Spool Swamp in the latter.

The Legend of Zelda: A Link Between Worlds
In The Legend of Zelda: A Link Between Worlds, Water Tektites appear based on their original design, though the eyes have been replaced with giant lips and two small antennae have been added. They again appear in the Swamp Palace and act as they did originally, though they are less plentiful. They now face Link when pursuing him.

The Legend of Zelda: Tri Force Heroes
In The Legend of Zelda: Tri Force Heroes, Water Tektites appear as they do in A Link Between Worlds at the Riverside and the Flooded Zone of the Den of Trials. Through the Water Rod, it is possible to get them onto land, where they walk around slowly and weakly.