Beyond the Sea Tag Team Championship

The Beyond the Sea Tag Team Championship is a professional wrestling tag team championship created and promoted by the Seadlinnng promotion. The inaugural champions were crowned on July 25, 2018, when Borderless (Rina Yamashita and Yoshiko) defeated Nanae Takahashi and Tsukasa Fujimoto.

Like most professional wrestling championships, the title is won as a result of a scripted match. There have been a total of eleven reigns and two vacancies shared among ten teams and thirteen wrestlers. The titles are currently vacant after Riko kaiju relinquished her half of the championships due to her retirement from professional wrestling.

Title history
On July 25, 2018, Borderless (Rina Yamashita and Yoshiko) defeated Nanae Takahashi and Tsukasa Fujimoto to become the inaugural champions. On February 28, 2019, the current champions Arisa Nakajima and Ayame Sasamura vacated the title after Sasamura suffered a leg injury. On March 20, Nakajima alongside Sae defeated Himeka Arita and Miyuki Takase to win the vacant championship.

Reigns
As of July 29, 2024, there have been 11 reigns between ten teams composed 13 individual champions and one vacancy. The inaugural championship team was Borderless (Rina Yamashita and Yoshiko). The team Las Fresa de Egoistas (Asuka and Makoto) has the most reigns at two times, while individually, Arisa Nakajima has the most reigns at four times. As a team, Asuka and Makoto has the lognest reign at 546 days in their second reign as a team, while Nakajima and Sae has the shortest at 39 days. Nanae Takahashi is the oldest champion at 42 years old, while Asuka is the youngest at 22 years old.

Makoto and Nagisa Nozaki are the current champions in their first reign as a team. They defeated Veny and Maya Yukihi on March 15, 2024 at SEAdLINNNG Shin-Kiba Series 2024 Vol. 2.

By team
As of July 29, 2024. {| class="wikitable sortable" style="text-align: center" !Rank !Team !No. of reigns !Combined defenses !Combined days !1 !2 !3 !4 (Rina Yamashita and Yoshiko) || 1 || 4 || 141 !5 !6 !7 !8 (Arisa Nakajima and Ayame Sasamura) || 1 || 1 || 77 !9 (Himeka Arita and Miyuki Takase) || 1 || 1 || 61 !10 !11 (Arisa Nakajima and Tsukasa Fujimoto) || 1 || 1 || 55 !12
 * Las Fresa de Egoistas (Asuka and Makoto) || 2 || 5 || 665
 * Hiroyo Matsumoto and Yoshiko || 1 || 5 || 463
 * Little Twin Berries (Ayame Sasamura and Riko Kaiju) || 1 || 2 || 169
 * Borderless
 * style="background-color:#FFE6BD"| Makoto and Nagisa Nozaki † || 1 || 1 || 8945 days+
 * Arisa Nakajima and Nanae Takahashi || 1 || 1 || 124
 * Hiroyo Matsumoto and Nanae Takahashi || 1 || 0 || 98
 * ∀∀ Impact
 * The Beginning
 * Sareee and Yoshiko || 1 || 1 || 56
 * Best Friends
 * Arisa Nakajima and Sae || 1 || 0 || 39