Harpy.

Harpy (Ἅρπυια) (hárpyia) (harpȳia) or harpies (Ἅρπυιαι) were creatures in Greek mythology. They were half-human and half-bird. Thaumas (Θαύμαντος) and Electra (Ἠλέκτρα) (Ēléktrā) were parents of harpies.

These creatures were similar to sirens (Σειρήν) (Seirḗn) (Σειρῆνες) (Seirênes).

Harpies were evil kidnappers of children and souls.

There are myths and legends about these monsters.

Melpomene.

Melpomene (Μελπομένη) (Melpoménē) was the Muse (Moûsai) of tragedy in Greek mythology. Zeus (Zeús) was her father and Mnemosyne was her mother.

Tragic mask was Melpomene's symbol.

Other Muses (Múses) and children of Zeus were her siblings.

Achelous (Ἀχελώϊος) (Akhelôios) was Melpomene's consort. They had children called sirens (Σειρήν) (Seirḗn) (Σειρῆνες) (Seirênes).

Sirens.

Sirens were creatures in greek mythology. They had women's head and birds' body. Achelous and Calliope were Sirens parents.

These creatures lived not far from sea. Sirens met with other gods and goddesses of Ancient Greece.

Artists and sculptors created a lot of paintings and sculptures of these creatures.