for all who wonder about the actual definitions of lake, ponds, and lagons, a lagoon (laguna in portoguese) is a depression formed by brackish or salt water, located on the coast and connected to the ocean through a channel.

a lake (lago in portoguese) is typically a depression inland, without any connection to the ocean, filled by fresh or river water that, is some case, can be salty.

a pond (a lagoa in portuguese) is a body of water surrounded by land - however, many ponds can be as large or even larger than some lakes, causing some confusion when translating the terms from english to portoguese, and vice-versa.