# Why are sea turtles endangered?

> Most sea-turtle species are threatened by accidental bycatch, illegal egg collection, coastal development, plastic pollution and climate change affecting nesting beaches. Most sea-turtle species face accidental capture in fisheries, illegal egg collection, coastal development, plastic pollution and climate change affecting nesting beaches.

**Category:** Habitat  ·  **Updated:** 2026-07-05

## Key takeaways
- Six of seven sea-turtle species threatened — IUCN Marine Turtle Specialist Group.
- Bycatch in trawls, longlines and gillnets is the leading at-sea killer.
- Nesting beaches lost to development; artificial light disorients hatchlings.
- Plastic ingestion kills — bags resemble jellyfish prey.
- Climate change skews hatchling sex ratios and erodes beaches.
- TEDs, beach protection and stranding rescue are proven responses.

## Answer
Only about one in a thousand hatchlings may reach adulthood under natural conditions; human pressures make those odds worse.

Hawksbill turtles are Critically Endangered — hunted historically for tortoiseshell. Green turtles face similar compound threats.

Beach protection, fishery gear modifications and rescue of injured turtles are core conservation responses.

## Fishery bycatch — the leading ocean threat
Sea turtles breathe air — trapped in trawl nets, longlines and gillnets, they drown without rapid release. Shrimp trawling historically killed tens of thousands annually until turtle-excluder devices (TEDs) became mandatory in some jurisdictions — but compliance gaps persist globally. Longline hooks catch loggerheads and leatherbacks seeking bait. IUCN Marine Turtle Specialist Group identifies bycatch as the primary at-sea mortality driver. Gear modifications — TEDs, circle hooks, time-area closures — work when enforced. Small-scale fisheries in developing nations often lack equipment and training — where WARN coastal partners advocate gear change.

## Nesting beach pressures
Females return to natal beaches to lay eggs — coastal development destroys nesting sites; seawalls block access. Artificial lighting disorients hatchlings, which evolve to crawl toward moonlight on water — street lights draw them inland to death. Egg poaching for food and trade persists despite legal protection in many countries. Predators — raccoons, dogs, crabs — take clutches; human pressure adds to natural mortality. Community hatcheries and protected beaches improve hatchling output when managed scientifically — not all tourist hatcheries help; some disrupt natural sex ratios through improper handling.

## Plastic pollution and marine debris
Turtles mistake plastic bags and balloons for jellyfish — ingestion causes gut blockages, malnutrition and death. Fishing line entanglement amputates flippers. Microplastic research continues; macro debris kills visibly. Ocean plastic concentrates in gyres and coastal zones overlapping turtle migration routes. Reducing single-use plastic and improving waste management in coastal WARN network countries — Indonesia, Sri Lanka, Kenya — complements fishery reforms. Necropsies of stranded turtles routinely find stomachs full of plastic.

## Climate change and recovery efforts
Sand incubation temperature determines hatchling sex — warmer sand produces more females, skewing populations over time. Rising seas erode nesting beaches; extreme storms destroy clutches. Recovery requires integrated approach: TED enforcement, nesting-beach protection, lighting ordinances, plastic reduction and rescue of injured strandings. Veterinary centres treat boat-strike injuries and floating syndrome from gas buildup. WARN sea-turtle appeal links donors to partner beach patrols and rehabilitation where programmes exist in coastal network countries.

## FAQ
### Why are sea turtles endangered?
Bycatch in fisheries, nesting-beach loss, egg poaching, plastic ingestion and climate change — six of seven species threatened on IUCN Red List.

### Which sea turtle is most endangered?
Hawksbill — Critically Endangered — historically hunted for tortoiseshell. Kemp’s ridley also Critically Endangered with restricted nesting range.

### Do plastic bags kill sea turtles?
Yes — turtles eat plastic mistaking it for jellyfish. Ingestion blocks digestive tracts and causes starvation.

### What is a turtle-excluder device?
A grid in trawl nets letting turtles escape while shrimp pass through — mandatory in US waters; reduces drowning mortality when used.

### How many hatchlings survive?
Natural estimates suggest roughly one in 1,000 to 10,000 hatchlings reaches adulthood — human pressures worsen odds.

### How can I help sea turtles?
Reduce plastic use, support fishery gear reform funding, protect nesting beaches through verified partners — WARN sea-turtle appeal.

## Sources
- [IUCN Marine Turtle Specialist Group](https://iucn-mtsg.org)

Human-readable page: https://worldanimalrescuenetwork.org/answers/why-are-sea-turtles-endangered