Converting prehistoric creatures

Transferred to Homebrews.

Anything worth doing with these?

CHELONIAN, MARINE
FREQUENCY: Common
NO. APPEARING: 1
ARMOR CLASS: 3
MOVE: 3"//18"
HIT DICE: 1 hp to 7HD
NO. OF ATTACKS: 1 (bite)
DAMAGE/ATTACK: Nil to 2-8
SPECIAL ATTACKS: Capsize boat
SPECIAL DEFENSES: Shell
INTELLIGENCE: Non-
SIZE: S to L, (2 to 12’ long)

Aquatic chelonians, also known as sea turtles, may be found in Cretaceous settings as well as in modern ones, with the difference that Cretaceous forms may exceed 3 HD in size. Though large, they are inoffensive eaters of sea grasses and jellyfish. Modern leatherback and hawksbill turtles are typical, while Archelon is extremely large Cretaceous form. If attacked, they usually flee; if this fails, they retaliate with a bite. Chelonians that are not attacking or swimming have an armor class of 2. They vary with size as shown below:

HD: to ¼ ½ 1 2 3 4-5 6-7
DAMAGE: Nil 1 1-2 1-3 1-4 1-6 2-8
SIZE: S (2-3) M(4) L(5) L(6) L(7) L(8-10) L(11-12)

Originally appeared in Dragon Magazine #112 (1986).
 

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Don't see a sea turtle converted to 3e in Echohawk's index. (There are some earlier edition giant sea turtles.) Still, I'd rather convert those and say they include prehistoric versions and then save the name "chelonian" for something appropriately pulpy, like the Dr Who monsters.
 

Don't see a sea turtle converted to 3e in Echohawk's index. (There are some earlier edition giant sea turtles.) Still, I'd rather convert those and say they include prehistoric versions and then save the name "chelonian" for something appropriately pulpy, like the Dr Who monsters.

Yes, if I recall correctly the Archelon has 3E stats in Stormwrack.

So, are you suggesting we do a "Sea Turtle" conversion and have it go up to Huge size?

Let's see... according to Echohawk's index the Dragon #112 is the only extant version or a "regular" marine turtle, although there's a Giant Sea Turtle in a number of sources - 1E Monster Manual; 2E Greyhawk MC, MC Annual #2.

Do you want to include the Huge/Gargantuan Giant Sea Turtles in this conversion as well?
 




Sea Turtle Working Draft

Sea Turtle
Small Animal
Hit Dice: 1d8+1 (5 hp)
Initiative: +1
Speed: 5 ft. (1 square), swim 40 ft.
Armor Class: 17 (+1 size, +1 Dex, +5 natural), touch 12,
flat-footed 16
Base Attack/Grapple: +0/-5
Attack: Bite +1 melee (1d4-1)
Full Attack: Bite +1 melee (1d4-1)
Space/Reach: 5 ft./5 ft.
Special Attacks:
Special Qualities: Fortification, hold breath, low-light vision
Saves: Fort +3, Ref +3, Will +1
Abilities: Str 8, Dex 13, Con 13, Int 1, Wis 12, Cha 4
Skills: Spot +5, Swim +9
Feats: Weapon Focus (bite)
Environment: Warm aquatic
Organization: Solitary
Challenge Rating: 1/3
Treasure: None
Alignment: Always neutral
Advancement: 2 HD (Small); 3-4 HD (Medium); 4-7 HD (Large)
Level Adjustment:

Sea Turtle, Giant
Huge Animal
Hit Dice: 8d8+48 (84 hp)
Initiative: -2
Speed: 5 ft. (1 square), swim 40 ft.
Armor Class: 18 (-2 size, -2 Dex, +12 natural), touch 6,
flat-footed 18
Base Attack/Grapple: +6/+23
Attack: Bite +14 melee (2d6+13)
Full Attack: Bite +14 melee (2d6+13)
Space/Reach: 15 ft./10 ft.
Special Attacks: Capsize
Special Qualities: Fortification, hold breath, low-light vision, withdraw
Saves: Fort +12, Ref +4, Will +3
Abilities: Str 28, Dex 7, Con 23, Int 1, Wis 12, Cha 4
Skills: Spot +12, Swim +19
Feats: Endurance, Snatch, Weapon Focus (bite)
Environment: Any aquatic
Organization: Solitary
Challenge Rating: 5
Treasure: None
Alignment: Always neutral
Advancement: 9-14 HD (Huge); 15-24 HD (Gargantuan)
Level Adjustment:


A turtle with a flattened body and powerful fore-flippers.

Sea turtles are common marine reptiles. Most of them are omnivores or herbivores and mainly eating seaweed, but there are carnivorous varieties that eat fish or jellyfish. A sea turtle lives its life in the water, except for when the females crawl onto sandy beaches to bury their eggs. Humanoids often hunt sea turtles. Their flesh and eggs are quite tasty, and their shells can be fashioned into implements or ornaments.

The statistics presented here describe a small sea turtle, 2 to 3 feet long and weighing 70 to 100 pounds. Some kinds of sea turtle grow much larger than that.

COMBAT

Sea turtles are rarely aggressive, preferring to swim away from opponents. They bite if threatened.

Fortification (Ex): Whenever a critical hit or sneak attack is scored on a sea turtle there is a 25% chance that the special attack is negated and its damage is rolled normally, similar to the effect of armor enchanted with the Light Fortification quality.

Hold Breath (Ex): A sea turtle can hold its breath for a number of rounds equal to 10 × its Constitution score before it risks drowning. For a typical sea turtle, this is 130 rounds, or 13 minutes.

Skills: A sea turtle has a +8 racial bonus on any Swim check to perform some special action or avoid a hazard. A sea turtle can use its Dexterity modifier or its Strength modifier on Swim checks. It can always choose to take 10 on a Swim check, even if distracted or endangered. It can use the run action while swimming, provided it swims in a straight line.

Giant Sea Turtle
These relatives of ordinary sea turtles are so enormous they can live comfortably in cold waters. Giant sea turtles are omnivores, preferring to eat plants and small animals. They do not usually hunt prey the size of most humanoids. These reptiles are just as tasty as their normal-sized cousins, and their shells are so huge they can be used as roofs or boats.

A giant sea turtle typically measures from 20 to 30 feet from snout to tail, with a shell from 15 to 25 feet in diameter, and weighs 30,000 pounds or more. Old specimens often reach lengths of 50 or 60 feet.

COMBAT

Giant sea turtles are basically non-aggressive, but fight fiercely if sorely provoked. If a giant sea turtle feels bothered by an intruder, it normally withdraws into its shell and waits to be left alone. Should a persistent enemy annoy or injure it, the turtle will bite with its deadly, tearing beak. An angry giant sea turtle may capsizes a ship by surfacing underneath it.

Capsize (Ex): A submerged giant turtle that surfaces under a boat or ship less than 20 feet long capsizes the vessel 95% of the time. It has a 50% chance to capsize a vessel from 20 to 60 feet long and a 20% chance to capsize one over 60 feet long.

Fortification (Ex): Whenever a critical hit or sneak attack is scored on a giant sea turtle there is a 75% chance that the special attack is negated and its damage is rolled normally, similar to the effect of armor enchanted with the Moderate Fortification quality. This chance increases to 100% when the turtle withdraws its appendages into its shell.

Hold Breath (Ex): A giant sea turtle can hold its breath for a number of rounds equal to 10 × its Constitution score before it risks drowning. For a typical sea turtle, this is 230 rounds, or 23 minutes.

Withdraw (Ex): A giant sea turtle can pull in its head and limbs to protect its vulnerable areas. While withdrawn, the tortoise cannot take any actions other than exiting its shell, but it gains cover. Withdrawing into its shell also grants the sea turtle heavy fortification, giving it 100% resistance to critical hits.

Skills: A giant sea turtle has a +8 racial bonus on any Swim check to perform some special action or avoid a hazard. A sea turtle can use its Dexterity modifier or its Strength modifier on Swim checks. It can always choose to take 10 on a Swim check, even if distracted or endangered. It can use the run action while swimming, provided it swims in a straight line.
 
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Should the giant sea turtle be alot tougher than the similar-sized archelon? Because as it stands, it is quite tougher (Str and Con). :erm:

For comparison...

Archelon
Huge Animal
Hit Dice: 12d8+84 (138 hp)
Initiative: -2
Speed: 10 ft. (2 squares), swim 20 ft.
Armor Class: 21 (-2 size, -2 Dex, +15 natural), touch 6, flat-footed 21
Base Attack/Grapple: +9/+26
Attack: Bite +16 melee (2d6+13)
Full Attack: Bite +16 melee (2d6+13)
Space/Reach: 15 ft./10 ft.
Special Attacks: -
Special Qualities: Hold breath, low-light vision
Saves: Fort +16, Ref +2, Will +5
Abilities: Str 28, Dex 7, Con 22, Int 2, Wis 13, Cha 7
Skills: Listen +11, Spot +6, Swim +17
Feats: Great Fortitude, Toughness (x4)
Environment: Warm aquatic
Organization: Solitary or pair
Challenge Rating: 8
Treasure: None
Alignment: Always neutral
Advancement: 13-24 HD (Huge); 25-36 HD (Gargantuan)
Level Adjustment: -
 


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