drhtulja | electric ray | torpedo marmorata

Electric ray Electric ray has a flat round body, thick tail and a large caudal fin. It has a smooth skin, on top brown with darker brown markings and a white belly. It lives on muddy and sandy seabed, at depths of 10-40 m, although it can dive into greater depths, up to 370 m. During the day it is mostly buried, with only its eyes protruding from the sand or mud, and is active at night. It feeds on small fishes and shrimps, paralyzing them by electrical discharges that can have a voltage of 200 V. Electric ray grows up to 70 cm in length, while its maximum weight may be 10 kg. It avoids temperatures above 20° C. It spawns in winter, from November till January. Female torpedos lay 5-32 younglings, 10-14 cm long, which are capable of independent life. Their electric organs are functional even before birth.

Drhtulja šarulja Ima plosnato tijelo, okruglog oblika, debeli rep i veliku repnu peraju. Ima glatku kožu odozgo smeđe boje s tamnijim smeđim šarama, dok joj je trbuh bijel. Živi na muljevitom i pjeskovitom dnu, na dubinama 10-40 m, iako zna zaći i na veće dubine, do 370 m. Danju je većinom ukopana, a samo joj oči vire iz pijeska ili mulja, a noću je aktivna. Hrani se manjim ribama i račićima, hvatajući ih tako da ih paralizira elektricitetom koji ispušta. Električna pražnjenja mogu imati napon i do 200 V. Drhtulja maksimalno naraste do 70 centimetara u duljinu, dok joj najveća težina može iznositi 10 kilograma. Izbjegava temperature iznad 20°C. Mrijesti se u zimskim mjesecima (od studenog do siječnja). Ženka leže 5-32 mlada, duljine 10-14 cm, koji se legu živi i sposobni za samostalan život, njihovi električni organi su funkcionalni i prije rođenja. Drhtulja šarulja može narasti do 100 cm i do 10 kg težine.

Benthos

Drhtulja šarulja