Large beast, unaligned · CR 2 · 2024 stat block below
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 18 (+4) | 15 (+2) | 16 (+3) | 2 (-4) | 12 (+1) | 5 (-3) |
Hold Breath. The plesiosaurus can hold its breath for 1 hour.
Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (3d6 + 4) piercing damage.
A plesiosaurus is worth 450 XP. Using the 2024 encounter budgets (SRD 5.2), this is how many plesiosauruses fit each difficulty for a party of four characters of the same level. A dash means even one would be over the budget.
| Party level | Low | Moderate | High |
|---|---|---|---|
| 2nd | — | 1 | 1 |
| 3rd | 1 | 2 | 3 |
| 4th | 2 | 3 | 4 |
| 5th | 4 | 6 | 9 |
| 6th | 5 | 8 | 12 |
| 7th | 6 | 11 | 12+ |
| 8th | 8 | 12+ | 12+ |
| 9th | 11 | 12+ | 12+ |
Budgets add up every monster’s XP, so you can swap some for other creatures of the same total. Try other party sizes and mixes in the encounter calculator.
Against the 42 other challenge 2 monsters in the SRD 5.1, the plesiosaurus has more hit points than 40 of them, which makes it one of the toughest at its CR. See every CR 2 monster.
| Statistic | Plesiosaurus | CR 2 average |
|---|---|---|
| Armor Class | 13 | 12.9 |
| Hit points | 68 | 46 |
| Best attack bonus | +6 | +5 |
The 2024 Monster Manual revised the plesiosaurus, and the SRD 5.2 carries the new stat block. What changed:
The numbers are the same; the text follows the 2024 rules glossary.
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 18 (+4) | 15 (+2) | 16 (+3) | 2 (-4) | 12 (+1) | 5 (-3) |
Hold Breath. The plesiosaurus can hold its breath for 1 hour.
Bite. Melee Attack Roll: +6, reach 10 ft. Hit: 11 (2d6 + 4) Piercing damage.
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