No, the word atolls is the plural form for the singular noun atoll. Example:
There are a number of atolls on the coast near my home.
Atto of Pistoia died in 1155.
Atto Melani died in 1714.
Atto Melani was born in 1626.
Atto Tigri died in 1875.
Atto Tigri was born in 1813.
Atto Suttarp is 184 cm.
Atto of Spoleto died in 663.
Atto of Pistoia was born in 1070.
ATTO Technology was created in 1988.
Atto di dolore was created in 1990.
These atolls are both in the Marshall Islands.
Atolls are formed first as a reef that fringes a volcanic island. The two largest atolls are Suvadiva in the Maldives Island and Kwajalein in the Marshall Islands.