RELL Seas Wiki

Ridgesnapper Mosasaur

Sea beastUpdated 25 Oct 2026
Ridgesnapper Mosasaur boss render

The Ridgesnapper Mosasaur is a huntable sea beast. It is a blue and white sea dragon with dark horns, a toothy maw and spotted blue fins. It circles your ship, dives, resurfaces and leaps out of the water. You fight it from a ship.

Class
Sea beast
Region
Open sea, fought from a ship
See 3 attacks

Not confirmed yet: Level, Spawn, HP phase 1, HP phase 2, Knowledge, Phases, Rewards and drops.

Attacks

3
  • Ship ram

    The beast rams the ship and pushes or drags it across the water.

    Damage
    -
    Parry
    -
    Dodge
    -
    Block
    -
    Evade
    -
  • Leap

    The beast leaps out of the water near the ship and lands with a big splash.

    Damage
    -
    Parry
    -
    Dodge
    -
    Block
    -
    Evade
    -
  • Circle and dive

    The beast circles the ship, dives and resurfaces beside it.

    Damage
    -
    Parry
    -
    Dodge
    -
    Block
    -
    Evade
    -

Fight tips

  • Sail away from the beast to gain distance so you can fire more.
  • When it is under your ship it tries to circle closer. Keep moving.
  • Disable its gimmick. The developers say it then takes much more damage on its health bar.
  • When the beast merges and heads for your ship, a blue bar appears. Deplete that bar.
  • Grapple onto it with chase shots instead of using random moves.
  • Watch for red streaks on the water and a red circle on the sea. They warn of an incoming hit.

Frequently asked questions

What is the Ridgesnapper Mosasaur?

It is a huntable sea beast that you fight from a ship.

How long does it take to kill?

The developers say about 5 to 7 minutes when done correctly.

How many phases does it have?

Five: attack, run, dive, merge and a second attack phase.

What does the blue bar mean?

It appears when the beast merges and heads for your ship. Depleting it is the goal in that phase.

What does it drop?

Not confirmed yet.