There are close to 100 seas in the world today, with over 50 seas officially identified and named based on their regional locations

. The term "seven seas" historically referred to different groups of seas depending on the era and culture, but in modern geography, the "Seven Seas" often refer to large regional seas or oceans, including:

• Arctic Sea
• North Atlantic Sea
• South Atlantic Sea
• North Pacific Sea
• South Pacific Sea
• Indian Sea
• Southern Sea

These "Seven Seas" correspond roughly to major oceanic regions rather than discrete seas like the Mediterranean or Caribbean

. In summary:

• The world has about 100 named seas.
• The "Seven Seas" is a traditional term that today usually refers to seven large oceanic regions.
• There are five oceans globally: Arctic, Atlantic, Pacific, Indian, and Southern Oceans

Thus, the exact number of seas depends on the definition, but officially, there are around 100 seas recognized worldwide.