What is the name of the longest estuary in the world?

The Ob River, also Obi, is a major river in western Siberia, Russia and is the world's seventh longest river. It forms at the confluence of the Biya and Katun rivers which have their origins in the Altay Mountains. It is the westernmost of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Yenisei River and the Lena River). The Gulf of Ob is the world's longest estuary.

The Ob forms 25 km (16 mi) southwest of Biysk in Altai Krai at the confluence of the Biya and Katun rivers. Both these streams have their origin in the Altay Mountains, the Biya issuing from Lake Teletskoye, the Katun, 700 kilometres (430 mi) long, bursting out of a glacier on Mount Byelukha.

More Info: en.wikipedia.org

Test your knowledge

What are your thoughts on this subject?

28 Comments

Jacqueline Tattam

The St Lawrence is the largest but the question asks for the longest which is the Gulf of Ob.

james parrillo

Carolyn Brior, You could tell the picture showed Siberia? Thank you, Christine, James' wife

Alfredo Rivas Lairet

Tricky question: largest or longest

earlepg

Laurie Johnson Gonzalez, Maybe not always, but I got answer right by using it.

jameswditto

Chose Saint Lawrence and was told it was wrong. Kind of surprising.

bonniecardona

Why the double speak in QC'S answer?? It was asked what is the longest estuary which is the St Lawrence River in Canada, I think some proof reading is severely needed before asking the question

teresab

The questions should not be contentious and tricky. I think I'll do my 365 days and retire.

Etagi Nagaraja ,

Everyone , or most here me including real question Largest , when it should be Longest , I also chose St,Laurence , endnote it's actually Gulf of Ob ??!!