Sunbathe
noun, する verb
You know that 日光 is sunlight so when you add bathe you get "sunlight bathe" ... but that sounds dumb, so let's call this word sunbathe instead!
にっこうよく
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
トトロの大きなおなかの上に乗って日光浴がしたいです。
I want to sunbathe on Totoro's big belly.
私は平日は日光浴だけで入浴はしない主ぎなんです。
My policy is not to bathe, but to sunbathe on weekdays.
トーフグのワンコは、ベランダで日光浴をするのが大好きです。
The Tofugu dog loves to sunbathe on the balcony.