KIDS TRIVIA

Detailed explanation-1: -Hydra, also called the Lernean Hydra, in Greek legend, the offspring of Typhon and Echidna (according to the early Greek poet Hesiod’s Theogony), a gigantic water-snake-like monster with nine heads (the number varies), one of which was immortal.

Detailed explanation-2: -The Lernaean Hydra or Hydra of Lerna (Greek: , Lernaîa Hýdra), more often known simply as the Hydra, is a serpentine water monster in Greek and Roman mythology.

Detailed explanation-3: -Now, Spanish researchers have identified an embryo of an Atlantic sawtail catshark with two heads, according to a new study in the Journal of Fish Biology. While raising sharks for human-health research in the laboratory, a team noticed the unusual embryo in a see-through shark egg.